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RMP77K4H–Parahughmilleria (Eurypterus) maria Clarke Page 84 See plate 22 1 Smallest specimen observed. Shows broad short carapace; broad preabdomen; large eyes; swimming legs; abdomen with apparently but eight segments and short telson. Paratype. × 6. (length 5.5mm) 2 Somewhat older individual, having 12 segments, but still retaining the broad carapace and preabdomen. Paratype. × 5. (length 8mm) 3 Carapace of young individual, showing the great width of carapace, the large lateral eyes with ocular node and visual area and prominent ocellar tumescence. × 18. (length 1.8mm) 4 Carapace and first tergite o
RMBGXNN5–Slipper Lobster (Scyllarides astori) camouflaged on coral reef at night with barnacle attached to carapace
RM2A2MHHG–Emys pulchella, Print, The wood turtle (Glyptemys insculpta) is a species of turtle endemic to North America. It is in the genus Glyptemys, a genus which contains only one other species of turtle: the bog turtle (Glyptemys muhlenbergii ). The wood turtle reaches a straight carapace length of 14 to 20 centimeters (5.5 to 7.9 in), its defining characteristic being the pyramidal shape of the scutes on its upper shell. Morphologically, it is similar to the bog turtle, spotted turtle (Clemmys guttata), and Blanding's turtle (Emydoidea blandingii). The wood turtle exists in a broad geographic range
RMHEWEK0–Crabs have wide, flat bodies with no obvious tail. The head and chest are fused and protected by a shield-like structure called a carapace. The tail is tucked under its body. Males have a narrow tail; females have a broad, rounded one that supports their eggs. True crabs have a pair of claws followed by four pairs of walking legs. Various other crustaceans (hermit crabs, porcelain crabs and king crabs) superficially resemble crabs but have only three pairs of walking legs.
RM2CEF20D–. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. No. 78. Testudo No. 77.Holoptychius nobilissimus.Very perfect and well-preserved Ganoid fish.**Old Red Sandstone(Devonian):Clashbennie, Scotland. Turtle, 23 inches long and 18th inches broad ; carapace and plastron complete. Miocene Tertiary. Sewalik hills, India, No. 79. Labyrinthodon jcegeri.^^ Head, with lowerjaw firmly closed. The portions of this most sin-gular fossil which have thus far been found
RM2JKR68P–Spider crab (Maja brachydactyla) off the coast of the Isle of Mull in the Inner Hebrides of Scotland
RMW9FB4W–Archive image from page 27 of The Cumacea of the Siboga-expedition. The Cumacea of the Siboga-expedition cumaceaofsibogae00calm Year: 1905 ( c. Fig. 3- Nannastactis hrachydaclyhis n. sp., adult male. a. From the side. /). From above, c. First leg. d. Fifth leg. c. Last somite and Uropod. Carapace about two-fifths of total length, somewhat depressed and not quite twice as long as broad. The dorsal surface is flattened posteriorly, sloping downwards towards the eyes
RF2G48K1T–Arrau turtle (Podocnemis expansa), St. Augustine Alligator Farm, St. Augustine, Florida, USA.
RMC5KFP2–The smell of bait in a lobster trap attracts a Spiny Lobster (Palinuridae). Ustica Island, Italy, Mediterranean Sea
RMPFFCMF–. Decapod Crustacea of Bermuda. Their distribution, variations, and habits. Decapoda (Crustacea). 442 A. E. Yerrill—Decapod Crustacea of Bermuda. The following description is from large Dominica specimens. The carapace is broad posteriorly, and much narrower in front of the deep transverse groove ; the harder anterior portion is longer than broad, with the posterior margin truncate medially, in front of which there is an incised V-shaped groove, and some lateral oblique ones ; front edge with three rounded lobes, the middle, one more obtuse and less prominent than the others and obscured by ha
![Dolichopterus macrochirus Hall Page 262 See plates 35, 40–41, 43–45 1 Dorsal view of the type specimen [Palaeontology of N. Y., v. 3, pl. 83]. The swimming legs are taken from the counterpart, as in the original figure, and show the ventral side. The specimen shows the shape of the carapace, the position of thé eyes, the walking and swimming legs and the dorsal side of the abdomen, except the last segment. The broad sternites appear on both sides of the tergites. The swimming leg exhibits all joints except the coxal joint and the broad lobelike extensions of the inner margin of the seventh joi Stock Photo](https://c8.alamy.com/comp/P77K5A/dolichopterus-macrochirus-hall-page-262-see-plates-35-4041-4345-1-dorsal-view-of-the-type-specimen-palaeontology-of-n-y-v-3-pl-83-the-swimming-legs-are-taken-from-the-counterpart-as-in-the-original-figure-and-show-the-ventral-side-the-specimen-shows-the-shape-of-the-carapace-the-position-of-th-eyes-the-walking-and-swimming-legs-and-the-dorsal-side-of-the-abdomen-except-the-last-segment-the-broad-sternites-appear-on-both-sides-of-the-tergites-the-swimming-leg-exhibits-all-joints-except-the-coxal-joint-and-the-broad-lobelike-extensions-of-the-inner-margin-of-the-seventh-joi-P77K5A.jpg "Dolichopterus macrochirus Hall Page 262 See plates 35, 40–41, 43–45 1 Dorsal view of the type specimen [Palaeontology of N. Y., v. 3, pl. 83]. The swimming legs are taken from the counterpart, as in the original figure, and show the ventral side. The specimen shows the shape of the carapace, the position of thé eyes, the walking and swimming legs and the dorsal side of the abdomen, except the last segment. The broad sternites appear on both sides of the tergites. The swimming leg exhibits all joints except the coxal joint and the broad lobelike extensions of the inner margin of the seventh joi Stock Photo")
RMP77K5A–Dolichopterus macrochirus Hall Page 262 See plates 35, 40–41, 43–45 1 Dorsal view of the type specimen [Palaeontology of N. Y., v. 3, pl. 83]. The swimming legs are taken from the counterpart, as in the original figure, and show the ventral side. The specimen shows the shape of the carapace, the position of thé eyes, the walking and swimming legs and the dorsal side of the abdomen, except the last segment. The broad sternites appear on both sides of the tergites. The swimming leg exhibits all joints except the coxal joint and the broad lobelike extensions of the inner margin of the seventh joi
RM2A2M9NE–Clemmys caspica, Print, Spotted turtle, The spotted turtle (Clemmys guttata), the only species of the genus Clemmys, is a small, semi-aquatic turtle that reaches a carapace length of 8–12 cm (3.1–4.7 in) upon adulthood. Their broad, smooth, low dark-colored upper shell, or carapace, ranges in its exact colour from black to a bluish black with a number of tiny yellow round spots. The spotting patterning extends from the head, to the neck and out onto the limbs. Males and females can be distinguished by differences in plastron shape and eye and chin colouration., 1700-1880
RMRFT5HX–. Carnegie Institution of Washington publication. 198 FOSSIL TURTLES OF NORTH AMERICA. As regards its habits, we may safely conclude that this turtle was an active swimmer on the open seas and that it was carnivorous in its diet. Wieland is of the opinion that all the members of this group were powerfully equipt for both swimming and attack, and may well have hunted actively swimming prey. As to swimming, we must remember that the boldest swimmer among turtles of our day is the leatherback, which has an elongated bod)-. The short, broad carapace of Protostega must have imparted to the animal a
RM2JKR66W–Spider crab (Maja brachydactyla) off the coast of the Isle of Mull in the Inner Hebrides of Scotland
RMW22YH6–Archive image from page 118 of Decapod crustaceans of the northwest. Decapod crustaceans of the northwest coast of North America .. decapodcrustacea00rath Year: 1904 DECAPODS 109 the second joint; second joint about one and a half times as long as the third; inner flagellum about one fourth longer than the carapace; outer flagellum about two thirds the length of the inner r. and becoming much smaller at the middle, the distal half very slender. Antennas with a strong spine below the base of the acicle; peduncle slightly exceeding that of the antenna; scale with a broad terminal spine, which
RF2G48K3D–Arrau turtles ( Podocnemis expansa), St. Augustine Alligator Farm, St. Augustine,Florida, USA.
RMC5KFNX–A diver observes a Spiny Lobster (Palinuridae) moving towards a lobster trap. Italy, Mediterranean Sea
![. The Eurypterida of New York. Eurypterida; Paleontology. 144 NEW YORK STATE MUSEUM Embryology] and one of Brauer's figures. Study of these shows that the carapaces of the larval eurypterids have a closer agreement with Limulus than with the scorpions. In the scorpion embryo and larvae the carapace is relatively of larger size than in the eurypterids, being nearly half the length of the em- bryo, but it is long and slender, instead of short and broad or semi- circular as in the merostomes; the procephalic region early exhibits a deep frontal emargination and, according to Metschnikoff, a dis- Stock Photo](https://c8.alamy.com/comp/PFXMFC/the-eurypterida-of-new-york-eurypterida-paleontology-144-new-york-state-museum-embryology-and-one-of-brauers-figures-study-of-these-shows-that-the-carapaces-of-the-larval-eurypterids-have-a-closer-agreement-with-limulus-than-with-the-scorpions-in-the-scorpion-embryo-and-larvae-the-carapace-is-relatively-of-larger-size-than-in-the-eurypterids-being-nearly-half-the-length-of-the-em-bryo-but-it-is-long-and-slender-instead-of-short-and-broad-or-semi-circular-as-in-the-merostomes-the-procephalic-region-early-exhibits-a-deep-frontal-emargination-and-according-to-metschnikoff-a-dis-PFXMFC.jpg ". The Eurypterida of New York. Eurypterida; Paleontology. 144 NEW YORK STATE MUSEUM Embryology] and one of Brauer's figures. Study of these shows that the carapaces of the larval eurypterids have a closer agreement with Limulus than with the scorpions. In the scorpion embryo and larvae the carapace is relatively of larger size than in the eurypterids, being nearly half the length of the em- bryo, but it is long and slender, instead of short and broad or semi- circular as in the merostomes; the procephalic region early exhibits a deep frontal emargination and, according to Metschnikoff, a dis- Stock Photo")
RMPFXMFC–. The Eurypterida of New York. Eurypterida; Paleontology. 144 NEW YORK STATE MUSEUM Embryology] and one of Brauer's figures. Study of these shows that the carapaces of the larval eurypterids have a closer agreement with Limulus than with the scorpions. In the scorpion embryo and larvae the carapace is relatively of larger size than in the eurypterids, being nearly half the length of the em- bryo, but it is long and slender, instead of short and broad or semi- circular as in the merostomes; the procephalic region early exhibits a deep frontal emargination and, according to Metschnikoff, a dis-
RMC5KFNK–Slipper Lobster (Scyllarides astori) scavenging on bottom. Galapagos Islands, Ecuador, Pacific Ocean.
RMP71G99–Pterygotus (Erettopterus) globiceps nov. Page 374 1 Nepionic stage showing the enormous size of the lateral eyes, the position of the ocelli and the small number of segments. × 30 2 Another larval specimen showing slightly different form of carapace, thickened rim of eyes and small number of segments of tapering abdomen. × 30 3 An older (neanic) stage in which the abdomen has assumed the proportion and composition of the adult stage. A broad thickened rim surrounds the eyes. × 12 4 Carapace of a young individual showing somewhat different characters, apparently due to compression in longitudin
RMRHRAM6–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. TORSION OF THE CRUSTACEAN LIMB. 135 decided approach to the brachyurans, or true crabs is seen in the short tail, the broad carapace armed with marginal spines, as well as in the slender antennas and other appendages so far as they are known. Very significant also is the fact that as in the modern crab the claws open obliquely outward. In the homarine Hoploparia> found in the Cretaceous and early Tertiary periods, the form of the large chelipeds renders it highly probable that a torsion of this limb had already taken plac
RMW9GCMC–Archive image from page 181 of Cumacea (Sympoda) (1913). Cumacea (Sympoda) cumaceasympoda00steb Year: 1913 ( 158 Cumacea: 20. Lampropidae, 3. Platytyphlops Synopsis of species: j Carapace with pair of conspicuous dorsal processes . . . 1. P. peringueyi ) Carapace without conspicuous dorsal processes y. P. orbicularis 1. P. peringueyi Stebb. 1912 P. p., T. Stebbiug in: Ann. S. Afr. Mus., r. 10v p. 159, 162 t. 58, 59. Pseudorostral lobes short, upturned. Carapace rounded oval, rather longer than broad, the carinate margin fringed with pellucid scales, ocular lobe small, triangular, frontal lobe
RMPFY1RJ–. The Eurypterida of New York. Eurypterida; Paleontology. THE EURYPTERIDA OF NEW YORK 379 Pterygotus (Erettopterus) grandis (Pohlman) emend. Plate 81 Ceratiocaris grandis Pohlman. Buffalo Soc. Nat. Hist. Bui. 1883. fig- 5 4' i9». The waterlime at Buffalo has furnished the broad symmetrical remains of a creature described by Pohlman as the carapace of a gigantic Ceratio- caris on the assumption that the two semicircular valves of this supposed phyllocarid had been spread out on both sides of the dorsal line. This view is clearly erroneous and the fossil is the telson of a Pterygotus. According
RMP77K5J–Kiaeropterus or Clarkeipterus (Dolichopterus) otisius Clarke Page 270 1 Carapace showing a broad furrowed rim, the large compound eyes and the ocelli. × 3 2 Carapace showing the visual area of the compound eyes and the ocellar mound. × 3 3 Slightly smaller carapace and two tergites. The compound eyes are depressed showing the thickened rim of the ocular node. × 3 4 Carapace of young individual showing the greater prominence of the ocellar mound. × 3 5 A presumably mature, well preserved carapace, showing the normal outline, a flat border and thickened rim, the crescent-shaped visual area of th
RMRMKH1R–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 22.—Metopograpsus. a, ventral view of orbit, to show complete infra-orbital margin (i.o.m.) and ant.2 excluded from orbit by inner orbital lobe (i.o.L). Pachygrapsus. b, the same, showing ant. 2 entering the orbit. Varuna. c, the same, showing incomplete infra-orbital margin supplemented by the sub-orbital crest (s.o.c). Grapsus maculatus (Catesby). d, ventral view of front and epistome, ant. 1 removed, socket narrow. Grapsus strigosus (Herbst). e, the same, socket broad. Carapace little broader
RMW9FY30–Archive image from page 82 of Cumacea (Sympoda) (1913). Cumacea (Sympoda) cumaceasympoda00steb Year: 1913 ( Oumacea: 7. Paralampropidae, 1. Paralamprops 59 1. Geu. Paralamprops 0. Sars 1887 Paralamprops, G. 0. Sars in: Rep. Voy. Challenger, v. 19 pars 55 p. 6, 26 | 1908 P., Zimmer in: Ergeb. Tiefsee-Exp., v. 8 p. 169, 170. Carapace broad, depressed, without antero-lateral angles. Pleon long and slender. lelson with three apical spines. Eye wanting. Fifth peraeopod normal. 2 species. Synopsis of species: ( Telson not nearly reaching end of peduncle of uropod 1. P. serratocostata Telson reach
RMPFFCTN–. Decapod crustaceans of the northwest coast of North America ... Crustacea -- North America. 148 RATHBUN as body. The dactylus of the external maxillipeds is subspatulate, fully twice as long as broad. The chelae of the first pair of feet are narrow and elongate, as in the succeeding pairs. Exopodites of first abdominal appendages not so long as the carapace; between the bases of these appendages is a sharp spine, equally devel- oped in both sexes. The thelycum consists of a horizontal convex sub- triangular plate or tubercle, placed between the third pair of legs, followed by two transverse
RMP77K5M–Hardieopterus (Stylonurus) myops Clarke Page 300 See plates 51, 53 1–4 Paratypes showing normal expressions of the carapace. Natural size 5 Young carapace with abnormally round outline and anterior eyes. × 3 6 The only entire specimen observed, dorsal view. Much compressed and poorly preserved. Natural size 7 Type. Carapace and two tergites. Carapace exfoliated; tergites showing the ornamentation. × 3 8 Interior view of carapace showing the broad doublure. × 3 9 Specimen showing a median prolongation in front. × 3 10 The holotype. × 3 11 Interior view of laterally compressed carapace showing f
RM2AG83TF–. Geological magazine. as long, but comparedwith the costals narrow. The latter are much longer than broad.The posterior marginals are slightly fluted parallel to their edge. The plastron is strongly united to the carapace by suture. Onthe seventh marginal there is a very powerful inguinal buttress,which from the prominence of its ridge at the marginal suture Reginald W. Sooley—A neio Tortoise from Hordicell. 67 -extends on to the fifth costal. The entoplastral bone is roundedposteriorly and intersected by the humero-pectoral sulcus, whichtraverses the plastron in a sinuous line. The pectoral-
RMW9G9FN–Archive image from page 150 of Cumacea (Sympoda) (1913). Cumacea (Sympoda) cumaceasympoda00steb Year: 1913 ( Cumacea: 11. Diastylidae, 7. Leptostylis 127 9. L. productus Norm. 1879 L. produda. A. M. Norman in: Ann. nat. Hist., ser. 5 V.3 p. 65 | 1912 L. productus, T. Stebbing in: Ann. S. Afr. Mus., v.0 p. 153. Pseudorostral lobes short, blunt, slightly upturned. Carapace short, as broad as long, nearly smooth, antero-lateral margin strongly serrate. Telson not longer than 6' pleon segment, nor more than half the 5'', without lateral spines, apical pair rather large. Peduncle of uropods near
![. The Eurypterida of New York. Eurypterida; Paleontology. 224 NEW YORK STATE MUSEUM front of the head shield to that segment and then decreasing as gradually to the second postabdominal segment where a contraction to half the. width takes place. The carapace appears to have been subrectangular, rather short and broad; length to width in the approximate proportion of 3 15. The lateral 50. Figures 50, 51 Eurypterus (Anthraconectes) mazonensis Meek & Worthen. Figure 50, copy of original figure; figure 51, outline sketch of counterpart of original, slightly reduced [see pi. 26, Rg. i] margins Stock Photo](https://c8.alamy.com/comp/PFY1WX/the-eurypterida-of-new-york-eurypterida-paleontology-224-new-york-state-museum-front-of-the-head-shield-to-that-segment-and-then-decreasing-as-gradually-to-the-second-postabdominal-segment-where-a-contraction-to-half-the-width-takes-place-the-carapace-appears-to-have-been-subrectangular-rather-short-and-broad-length-to-width-in-the-approximate-proportion-of-3-15-the-lateral-50-figures-50-51-eurypterus-anthraconectes-mazonensis-meek-amp-worthen-figure-50-copy-of-original-figure-figure-51-outline-sketch-of-counterpart-of-original-slightly-reduced-see-pi-26-rg-i-margins-PFY1WX.jpg ". The Eurypterida of New York. Eurypterida; Paleontology. 224 NEW YORK STATE MUSEUM front of the head shield to that segment and then decreasing as gradually to the second postabdominal segment where a contraction to half the. width takes place. The carapace appears to have been subrectangular, rather short and broad; length to width in the approximate proportion of 3 15. The lateral 50. Figures 50, 51 Eurypterus (Anthraconectes) mazonensis Meek & Worthen. Figure 50, copy of original figure; figure 51, outline sketch of counterpart of original, slightly reduced [see pi. 26, Rg. i] margins Stock Photo")
RMPFY1WX–. The Eurypterida of New York. Eurypterida; Paleontology. 224 NEW YORK STATE MUSEUM front of the head shield to that segment and then decreasing as gradually to the second postabdominal segment where a contraction to half the. width takes place. The carapace appears to have been subrectangular, rather short and broad; length to width in the approximate proportion of 3 15. The lateral 50. Figures 50, 51 Eurypterus (Anthraconectes) mazonensis Meek & Worthen. Figure 50, copy of original figure; figure 51, outline sketch of counterpart of original, slightly reduced [see pi. 26, Rg. i] margins
RMMCTPE5–. Fig. 13. Amphionides valdiviae, Zimmer. a. Side view. d. Maxilla. b. Eye and antennule. e. Maxillipede i. c. Antenna. Zimmer expressed doubt as to whether the carapace was, in life, broad and flat or cylmdrical; but I feel fairly sure that it was not flattened dorso-ventrally. Posterior margin fringed with hairs; anteriorly with a blunt rostral prominence and a faint median dorsal ridge ending in front in a wedge-like elevation with a small spine in front.
RM2AFMMHG–. Introduction to zoology; a guide to the study of animals, for the use of secondary schools;. largest of all the Crustacea, someindividuals measuring, from tip to tip of the first pair oflegs, 18 to 20 feet. The edible crab is a typical arched crab. It is so calledbecause the carapace is arched in front. The carapace isalso broader than long, and narrower behind than in front. THE CRAYFISH AND ITS ALLIES 109 The legs of this family are short and broad, and in somespecies the posterior pair is especially broad - - an adapta-tion for swimming. These crabsmay be divided into two groups— the burr
RMW1WEJT–Archive image from page 787 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana01todd Year: 1836 Limulus polypheaua, (ventral aspect.) a, carapace; b, frontal portion of the carapace; c, thorax ; d, chelifera; e,f, y, h, i,.j, legs, the basilar portions of which surround the mouth and act as mandibles ; /, under-lip ; m, branchial or lamellii'orm appendages ; n, mouth. itself under the shape of two thin and much expand- ed laminae which serve as a kind of broad operculum to cover the whole of the oral apparatus. Starting from this complication of structur
RMPFFD0J–. Decapod crustaceans of the northwest coast of North America ... Crustacea -- North America. DECAPODS 109 the second joint; second joint about one and a half times as long as the third; inner flagellum about one fourth longer than the carapace; outer flagellum about two thirds the length of the inner r. and becoming much smaller at the middle, the distal half very slender. Antennas with a strong spine below the base of the acicle; peduncle slightly exceeding that of the antenna; scale with a broad terminal spine, which reaches the end of the antennular peduncle, and ex- ceeds the blade, from
RMMCTMB8–. Fig. 10. Thalassinid D. IV. St. 1581. a. Side view. b. Telson. c. Head and rostrum. Thalassinid B.R. II (Fig. 11) Barrier Reef St. 46. Rostrum i-i5 mm.; body 4-0 mm. Rostrum very broad, scarcely longer than antennule. Carapace with close-set marginal spines in front. Abdomen: somites 1-3 without spines; somites 4 and 5 with dorsal spine. Telson twice as long as wide, spines i and 2 wide apart, but near angle; posterior margin convex, with long median spine and four spines either side. Spine formula 8, I, 8. .
RM2AJBR9H–The reptile book; a comprehensive popularised work on the structure and habits of the turtles, tortoises, crocodilians, lizards and snakes which inhabit the United States and northern Mexico . ow lines; from the eye to the base of the headis a broad band of rich crimson. Dimensions.—Average length of carapace, 10 inches; width,y£ inches; length of plastron, 9^- inches. Distribution.—Extends over a considerable area—Ohioto Kansas, southward to the Gulf States and to the lower RioGrande River. Habits.—Very hardy as a captive. It eats chopped fishand meat, and very tender green vegetables that ma
RMT1HWN4–Discovery reports (1938) Discovery reports discoveryreports17inst Year: 1938 LARVAE OF DECAPOD CRUSTACEA 323 Eye oval. Antenna: basis with small inner spine; scale with outer basal seta. Palp of maxillule and maxilla of three segments. Maxillipede i with outer seta on segment i; epipod bilobed. Chelae of legs i and 2 large. Leg 5 with minute exopod. Epipods absent. Four pairs of pleopods. Thalassinid B.R. V (Fig. 23) Barrier Reef St. 54. Rostrum 1-35 mm.; body 4-93 mm. Rostrum broad, not much longer than antennule. Carapace with close-set marginal spines in front and a dorsal ridge armed wit
RMPG0PX1–. A manual of zoology. PHYLUM ARTHROPODA 261 ing by gills, in which the body consists of two regions, — the cephalothorax and the abdomen. The former is covered ofierc. Fig. 157.—Ventral view of Limulus. 1-0, appendages of cephalothorax; abdt abdomen; ceph, cephalothorax; cpcrc, operculum, behind which are seen the series of abdominal appendages; tels, caudal spine or telson. (From Packard, after Kingsley.) over by a broad shield or carapace, bearing two large com- pound and two smaller, simple eyes. The segments of the. Please note that these images are extracted from scanned page images that
RMMCTM91–. Fig. 22. Thalassinid D. XII. St. 1576. a. Abdomen. b. Rostrum. c. Telson. d. Chela, leg i. telson is not the same, and the chela of leg i is much stouter. There is also no seta on the antennal scale. Two specimens from St. 1580 cannot be distinguished from the form described except that there is no trace of an exopod on leg 5. Thalassinid B.R. IV Barrier Reef St. 50. Rostrum 1-75 mm.; body 5-95 mm. Rostrum broad, tapering, much longer than antennule. Carapace with seven small marginal spines. Abdomen: somite 2 with very large hollowed spine; somites 3-5 with small spines and slight ridge. Pl
RM2AXH6CE–Geology . specialized than inthe early Jurassic (Fig. 413, a). The sea turtles.—The first strictly marine turtles appeared inCretaceous times, and deployed into many and diverse forms. Themaximum size of the order was reached in the gigantic Protostega THE CRETACEOUS PERIOD. 181 and the even greater Archelon. These were broad, flat forms, degene-rate in having the carapace reduced to the ribs alone, and probablycovered with a soft skin, as are some living marine turtles. Archelon ? O^ * • , SLts^Sfc ^fcj^&SBS&i • ^^n^fti 5te& * ? -^^^^ Fig. 413a.—Trinacromerum osborni Williston. A mounted sk
RMT1HWCB–Discovery reports (1938) Discovery reports discoveryreports17inst Year: 1938 LARVAE OF DECAPOD CRUSTACEA 31S Thalassinid D. VIII (Fig. 15) Discovery St. 708. Rostrum i-88 mm.; body 5-28 mm. Rostrum not much longer than antennule, rather broad, serrated to end. Carapace with close-set marginal spines in front, smooth behind. Abdomen: somite 2 without spine; somites 3-5 with a pair of small dorsal spines. Pleura rounded. Telson less than three times as long as wide; posterior margin slightly convex, median spine rather short; spine formula 8, 1,8. Eye nearly round. Antenna with small inner spi
RMPG3YHC–. A manual of zoology. Zoology. I. CRUSTACEA: PHYLLOPODA 365 Sub Class II. Phyllopoda. The Phyllopoda are the most primitive Crustacea. The name is derived from the leaf-like feet (fig. 375), which occur upon the thoracic region. The anterior appendages are schizopodal, the second pair of antennce often being efficient swimming organs. The number of somites varies between wide linnts, there being less than a dozen in the Cladocera, while, if Savigny's law (p. 352) hold true, there are over sixty in some Apodidas. Most forms (the Branchipodid:e excepted) have a carapace. This forms a broad oval
![. Fig. II. Thalassinid B.R. II. a. Head and rostrum. b. Telson. Group I B Dorsal spines on some abdominal somites paired The six species included in this group all agree in having a telson of "A" type and well developed exopod on leg 5. In having some of the dorsal spines in pairs they resemble Axius stirhynchiis, and there can be very little doubt that they may be assigned to Axiidae. Thalassinid D. V (Fig. 12) Discovery St. 711. Rostrum 2-65 mm.; body 7-07 mm. Rostrum broad, tapering, not greatly longer than antennule. Carapace with close- set small marginal spines in front. Abdome Stock Photo](https://c8.alamy.com/comp/MCTMAN/fig-ii-thalassinid-br-ii-a-head-and-rostrum-b-telson-group-i-b-dorsal-spines-on-some-abdominal-somites-paired-the-six-species-included-in-this-group-all-agree-in-having-a-telson-of-quotaquot-type-and-well-developed-exopod-on-leg-5-in-having-some-of-the-dorsal-spines-in-pairs-they-resemble-axius-stirhynchiis-and-there-can-be-very-little-doubt-that-they-may-be-assigned-to-axiidae-thalassinid-d-v-fig-12-discovery-st-711-rostrum-2-65-mm-body-7-07-mm-rostrum-broad-tapering-not-greatly-longer-than-antennule-carapace-with-close-set-small-marginal-spines-in-front-abdome-MCTMAN.jpg ". Fig. II. Thalassinid B.R. II. a. Head and rostrum. b. Telson. Group I B Dorsal spines on some abdominal somites paired The six species included in this group all agree in having a telson of "A" type and well developed exopod on leg 5. In having some of the dorsal spines in pairs they resemble Axius stirhynchiis, and there can be very little doubt that they may be assigned to Axiidae. Thalassinid D. V (Fig. 12) Discovery St. 711. Rostrum 2-65 mm.; body 7-07 mm. Rostrum broad, tapering, not greatly longer than antennule. Carapace with close- set small marginal spines in front. Abdome Stock Photo")
RMMCTMAN–. Fig. II. Thalassinid B.R. II. a. Head and rostrum. b. Telson. Group I B Dorsal spines on some abdominal somites paired The six species included in this group all agree in having a telson of "A" type and well developed exopod on leg 5. In having some of the dorsal spines in pairs they resemble Axius stirhynchiis, and there can be very little doubt that they may be assigned to Axiidae. Thalassinid D. V (Fig. 12) Discovery St. 711. Rostrum 2-65 mm.; body 7-07 mm. Rostrum broad, tapering, not greatly longer than antennule. Carapace with close- set small marginal spines in front. Abdome
RM2AWGFW0–The Annals and magazine of natural history; zoology, botany, and geology . Length of carapace 1 inch 5 lines, width 1 inch9 lines, general surface smooth, sides minutely granular; handsabout 7 lines wide and 1 inch 1 line long, the obtusely keeledupper edge with five or six obtuse tubercles, the outer surfaceminutely shagreened and bearing three or four irregular longi-tudinal rows of small tubercles; fingers short, curved, roundedon the outer edge, and with three or four blunt teeth on the inneredge; tail 6^ lines broad, only the five proximal joints preserved,but the fifth being about the sa
RMPFYHF9–. Fresh-water biology. Freshwater biology. 662 FRESH-WATER BIOLOGY in the position of the eyes. In the Anostraca (Fig. loii) there is no shell-fold and the body, composed of many distinct somites, has an almost worm-like aspect; the Notostraca (Fig. 1012) are also elongated and composed of numerous somites, but are flattened, and their anterior portion is covered dorsally by a broad arched carapace; the bodies of the Conchostraca (Fig. 1013) tend to be laterally com- pressed and are enveloped in a bivalve shell that makes them look hke a small clam. The shell-fold is not attached to the trunk
RMMCTMAA–. Fig. 14. Thalassinid D. VII. St. 708. a. Head and rostrum. b. Telson. c. Antenna. d. Palp of maxillule. Thalassinid D. VII (Fig. 14) Discovery St. 708. Rostrum 2-06 mm.; body 5-95 mm. Rostrum rather broad, tapering, serrated to end, not much longer than antennule. Carapace with close-set small marginal spines in front and behind. Abdomen: somite 2 with large dorsal spine; somite 3 with small dorsal pair; somites 4 and 5 with a pair of very small dorsal and a pair of larger dorso-lateral spines. Pleura rounded. Telson about three times as long as wide; posterior margin convex, with median spi
RM2AG62PT–. Quarterly journal of microscopical science. Fig. 7.. oo- FiG. .5.—Amblyopsis abbreviata, G. O. Sars. Norway coast,100 to 300 fathoms. No ommatidia. The ocular peduncles are seenas two broad plates. Carciiiologiske Bidrao-, pi, vi, fig. 2 (and 22). FiG. G.—Amblyops Crozetii, Will. Suhni. Male, x 5 times.1600 fathoms, S. Pacific. The ocular peduncles are united in frontof carapace. Sars, Schizopoda, pi. xxxiii, fisr. 11. Fig. 7.—Pseudomma roseum, G. 0, Sars. Lofoden Isles,400 fathoms. No ommatidia. The ocular peduncles form a broadplate with peculiar internal arborescent structure. Sars, Carci
RMPFN5M3–. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Limulus polypheaua, (ventral aspect.) a, carapace; b, frontal portion of the carapace; c, thorax ; d, chelifera; e,f, y, h, i,.j, legs, the basilar portions of which surround the mouth and act as mandibles ; /, under-lip ; m, branchial or lamellii'orm appendages ; n, mouth. itself under the shape of two thin and much expand- ed laminae which serve as a kind of broad operculum to cover the whole of the oral apparatus. Starting from this complication of structure, the greatest in the series, we shall see the ap- paratus de
RMMCTM8M–. a. Rostrum. d. Maxilla. Fig. 29. Thalassinid D. XVII. St. 406. b. Telson. e. Maxillipede i. /. Leg i. c. Palp of maxillule. g. Leg 2. Legs I and 2 with large chelae, the palm wider than long. Legs 3 and 4 with propod rather broad. Leg 5 without exopod. Epipods absent. Pleopods on somites 3-5 very stout. Uropods large. Callianassa? B.R. IX (Fig. 30) Barrier Reef St. 46. Total length 6-4 mm. Rostrum narrow, serrated, not much longer than antennule. Carapace with small spine at anterior angle and three small marginal spines. Abdomen: somites 1-5 without spines; somite 6 with a small dorsal spin
RM2CDY32H–. Popular history of the aquarium of marine and fresh-water animals and plants . nd its colour paler. Subjecting it to the microscope, liefound that the front part of the animal had changed its form,and on the fourth day it had changed in every part. A largespine on the carapace of the first form had disappeared inthe second; and, together with other changes, the tail hadchanged from a two-pronged fork to a broad flap, or spade.The second form of this Zoea, as figured by Slabber, turnsout to correspond with that of several subsequently observedspecies, the larvse of Valcemon. PALiEMON SERRATUS
RMPFFD55–. Decapod crustaceans of the northwest coast of North America ... Crustacea -- North America. 32 RATHBUN segment, a minute black ocellus above and toward the outside, and be- yond the limit of the cornea.. Fig. io. Urocaris in/rasfiinis. 9 (X 3s)- Locality unknown, a. Side. b. Dorsal view of anterior portion. Antennular peduncle nearly as long as carapace, exclusive of rostrum; first segment broad, its thin outer margin armed with a spine on the basal portion and another at the extremity; the inner angle of the lateral ex- pansion is advanced beyond the articulation of the second joint; second
RMMCTMB1–. a. Rostrum. Fig. 9. Thalassinid D. III. St. 1581. b. Telson. c. Palp of maxillule. d. Endopod of maxillipede i. Eye narrow, oval. Antenna with small inner spine on basis, and outer basal seta on scale. Palp of maxillule and maxilla of three segments. Maxillipede i; endopod stout, with outer seta on segment i. Chelae of leg i very large. Leg 5 with long exopod. Epipods present on legs 1-4. Pleopods on somites 2-5. Thalassinid D. IV (Fig. 10) Discovery Sts. 1578, 1581. Rostrum 2-06 mm.; body 9-72 mm. Rostrum short, broad, tapering, without teeth at end. Carapace with about five large marginal
RM2CNNXMK–. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . oth, is quadrate in form, is abouttwo inches long and broad, has two spines on each side, and has a promi-nent denticulated rostrum. This is the most common spider-crab of thePacific (California) coast. It is olive-green, thus simulating in color thekelp among which it lives. (See page 285.) GENUS PitJio P. aculeata. The carapace has six spines on each side, the middletwo being sometimes partly united; the general outline is pentagonal;the length about one inch. Quite common o
![. Cumacea (Sympoda). Cumacea. â 144 Cumacea: ]7. Pseudocuiuatidae, 2. Schizorbynchus lateral corners nearly rectangular, front margin serrulate. Carapace with a pair of serrulate submedian carinae between the eyelobe and the middle, their hinder part flanked by crests wliich rising from the sides curve round so as to define medio-dorsally the branchial regions. Pedigerous segments evenly arched above. Pleon not very long. Telson sub- semicii'cular, the serrulate margin affording 2 decided teeth on each side of the narrowly truncate apex. Eyelobe short and broad, concavely truncate, with 2 smal Stock Photo](https://c8.alamy.com/comp/PFY7RH/cumacea-sympoda-cumacea-144-cumacea-7-pseudocuiuatidae-2-schizorbynchus-lateral-corners-nearly-rectangular-front-margin-serrulate-carapace-with-a-pair-of-serrulate-submedian-carinae-between-the-eyelobe-and-the-middle-their-hinder-part-flanked-by-crests-wliich-rising-from-the-sides-curve-round-so-as-to-define-medio-dorsally-the-branchial-regions-pedigerous-segments-evenly-arched-above-pleon-not-very-long-telson-sub-semiciicular-the-serrulate-margin-affording-2-decided-teeth-on-each-side-of-the-narrowly-truncate-apex-eyelobe-short-and-broad-concavely-truncate-with-2-smal-PFY7RH.jpg ". Cumacea (Sympoda). Cumacea. â 144 Cumacea: ]7. Pseudocuiuatidae, 2. Schizorbynchus lateral corners nearly rectangular, front margin serrulate. Carapace with a pair of serrulate submedian carinae between the eyelobe and the middle, their hinder part flanked by crests wliich rising from the sides curve round so as to define medio-dorsally the branchial regions. Pedigerous segments evenly arched above. Pleon not very long. Telson sub- semicii'cular, the serrulate margin affording 2 decided teeth on each side of the narrowly truncate apex. Eyelobe short and broad, concavely truncate, with 2 smal Stock Photo")
RMPFY7RH–. Cumacea (Sympoda). Cumacea. â 144 Cumacea: ]7. Pseudocuiuatidae, 2. Schizorbynchus lateral corners nearly rectangular, front margin serrulate. Carapace with a pair of serrulate submedian carinae between the eyelobe and the middle, their hinder part flanked by crests wliich rising from the sides curve round so as to define medio-dorsally the branchial regions. Pedigerous segments evenly arched above. Pleon not very long. Telson sub- semicii'cular, the serrulate margin affording 2 decided teeth on each side of the narrowly truncate apex. Eyelobe short and broad, concavely truncate, with 2 smal
RMMCTM8X–. Fig. 25. Thalassinid D. XIV. a. Telson. h. Telson stage II. c. Antenna, stage II. Callianassa? D. XV (Fig. 26) Discovery St. 708. Rostrum 1-24 mm.; body 3-90 mm. Rostrum very broad, scarcely longer than antennule. Carapace with close-set marginal spines in front. Abdomen: somite 2 with dorsal spine reaching end of somite 4; somites 3-5 with coarsely serrated dorsal ridge. Telson less than twice as long as wide; lateral spines 1-4 close together at angle; posterior margin concave, with minute median spine and four spines on either side; spine formula 8, 1,8. Eye oval, rather pointed, pale. An
RM2CEDWT3–. The annals and magazine of natural history : zoology, botany, and geology. e from which the specimenswere taken is situated at an altitude of 6000 feet above sea-level and drains into the Yang-tze river-system. No speciesof Potamouidaj appear to have been recorded from this part ofYunnan, although Wood-Mason described throe species ofPotamon from Western Yunnan, a district belonging to theriver-system of the Irawady. 156 Dr. W. T. Caiman on a Paratlielphisa spinesceris, sp. n.Carapace four fifths as long as broad, the greatest breadtha little in front of the middle, only slightly convex ante
RMPFWMJ0–. The Cumacea of the Siboga-expedition. Cumacea; Zoology. c. Fig. 3- Nannastactis hrachydaclyhis n. sp., adult male. a. From the side. /). From above, c. First leg. d. Fifth leg. c. Last somite and Uropod. Carapace about two-fifths of total length, somewhat depressed and not quite twice as long as broad. The dorsal surface is flattened posteriorly, sloping downwards towards the eyes. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
RMMCTM8E–. a. Part of telson. Fig. 30. Thalassinid B.R. IX. b. Antenna. c. Mandible and maxillule. d. Maxilla. e. Maxillipede i. Callianassa? B.R. X Barrier Reef St. 49. Total length 6-8 mm. Rostrum rather narrow, scarcely longer than antennule. Carapace with a few small marginal teeth. Abdomen: somites 2-5 with small dorsal spines, slightly ridged. Telson broad, triangular, with 19, i, 19 spines. Eye round, black. Antenna: basis with small outer and minute inner spines; scale without outer basal seta. Mouth parts rudimentary. Legs I and 2 with rather small chelae. Leg 4 with small exopod; leg 5 withou
RM2CPBTCR–. Transactions and proceedings of the New Zealand Institute . Soc. IX., p. 86, T. II., f. 3. Ebalia hryerii, Leach, Mai. Podoph. Brit., T. XXV., f 12-13.Carapace slightly and minutely granulated; lateral margin entire, some-what revolute at the angles ; tvv^o tubercles on the cardiac region, and oneon each of the branchial in the male ; these parts very tumid in thefemale; abdomen in the male with the third to the fifth joints united; inthe female the fourth to the sixth ; arm not more than twice as long as itis broad. (Bells Brit. Crust., p. 145.) Hab: Cook Strait. A single female, and the ri
RMPFY1WF–. The Eurypterida of New York. Eurypterida; Paleontology. 23© NEW YORK STATE MUSEUM of the eyes, and the subcirctilar outhne of the preabdomen. Laurie properly compares his Eurypterus scoticus with Eusarcus Scor- pio n i s Grote & Pitt. It has the outhne of body and the Hmbs of an Eusarcus. Further, the imperfectly known Eurypterus acro- c e p h a 1 u s Semper (1898), a Bohemian form, belongs here. Its subtri- angular carapace which gave the species its name and the broad, abruptly, contracted preabdomen warrant this reference and Semper has coiTectly Figure 52 Metastoma of Eusarcus punc
RMMCTMAG–. Fig. 16. Thalassinid D. IX. St. 1576. a. Side view. b. Telson. c. Rostrum. Thalassinid B.R. Ill (Fig. 17) Barrier Reef Sts. 46, 49. Rostrum 2-0 mm.; body 5-35 mm. Rostrum broad at base, tapering, not greatly longer than antennule. Carapace with close-set marginal spines in front. Abdomen: somite 2 without spines; somites 4 and 5 with dorsal pair. Telson parallel-sided, three times as long as wide; spines 1-4 widely separated; posterior margin convex with long median spine and four spines either side; spine formula 8, i, 8. Eye nearly round, black. Antenna: basis with very long outer and very
RM2CE4ME1–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . 0.10 mm D i A, 0.25 mm C 0.10 mm i B Figure 4 Anisomysis unispinosa sp. nov. Adult male: (A) fourth pleopod. (B) distal end of exopod of fourth pleopod. (C) uropod. (D) telson. MYSIDACEA FROM THE COMOROS ARCHIPELAGO 95 rounded. Eyes longer than broad, projecting well beyond lateral margin of carapace.Cornea wider than eyestalk. Antennular peduncle more robust in male than in female; in male first article (Fig.IB)equal in length to third article, armed at outer distal angle with a long seta. Second articletwice as br
![. The Eurypterida of New York. Eurypterida; Paleontology. 238 NEW YORK STATE MUSEUM little doubt—^then it attained three fourths the length of the carapace. The basal segment is broad and massive, three times as long as wide, con- tracting slightly at the distal end. The two segments forming the pincers are but half as long as the basal segment, broad at the base and furnished with very acute, slightly curved tips. In the type of the species [pi. 31] the basal segments alone are seen, turned back to their full length; in plate 32 the pincers and a part of the basal segments are folded backward Stock Photo](https://c8.alamy.com/comp/PFY1W4/the-eurypterida-of-new-york-eurypterida-paleontology-238-new-york-state-museum-little-doubtthen-it-attained-three-fourths-the-length-of-the-carapace-the-basal-segment-is-broad-and-massive-three-times-as-long-as-wide-con-tracting-slightly-at-the-distal-end-the-two-segments-forming-the-pincers-are-but-half-as-long-as-the-basal-segment-broad-at-the-base-and-furnished-with-very-acute-slightly-curved-tips-in-the-type-of-the-species-pi-31-the-basal-segments-alone-are-seen-turned-back-to-their-full-length-in-plate-32-the-pincers-and-a-part-of-the-basal-segments-are-folded-backward-PFY1W4.jpg ". The Eurypterida of New York. Eurypterida; Paleontology. 238 NEW YORK STATE MUSEUM little doubt—^then it attained three fourths the length of the carapace. The basal segment is broad and massive, three times as long as wide, con- tracting slightly at the distal end. The two segments forming the pincers are but half as long as the basal segment, broad at the base and furnished with very acute, slightly curved tips. In the type of the species [pi. 31] the basal segments alone are seen, turned back to their full length; in plate 32 the pincers and a part of the basal segments are folded backward Stock Photo")
RMPFY1W4–. The Eurypterida of New York. Eurypterida; Paleontology. 238 NEW YORK STATE MUSEUM little doubt—^then it attained three fourths the length of the carapace. The basal segment is broad and massive, three times as long as wide, con- tracting slightly at the distal end. The two segments forming the pincers are but half as long as the basal segment, broad at the base and furnished with very acute, slightly curved tips. In the type of the species [pi. 31] the basal segments alone are seen, turned back to their full length; in plate 32 the pincers and a part of the basal segments are folded backward
RMMCTM90–. Fig. 26. Thalassinid D. XV. St. 708. a. Side view. h. Rostrum. d. Palp of maxillule. e. Palp of maxilla. Eye oval, pointed, black. Antenna with small inner spine on basis; scale with long outer basal seta. Palp of maxillule and maxilla of three segments. Maxillipede with outer seta on seg- ment I. Chelae of legs i and 2 not very large. Leg 5 without exopod. Epipods absent. Three pairs of pleopods. Callianassa? B.R. VII (Fig. 27) Barrier Reef St. 65. Body 4-84 mm. Rostrum broad, not much longer than an- tennule. Carapace with close-set spines in front. Abdomen: somite 2 with very large dorsal
RM2CJ6WGR–. Contributions to Canadian biology . rr. a b c d Fig. 9. e f Key based upon the characters of the carapace. (Fig. 9). Aj Rostrum with lateral teeth. Bj Numerous spines on sides of carapace C. limosus. Bj Only one pair of spines on sides of carapace. Ci Areola broad (about 2 mm) C propinquus. C2 Areola narrow (about 1 mm) C. virilis. A2 Rostrum without lateral teeth. •Except C. immunis. FRESH-WATER MALACOSTRACA OF ONTARIO 157 SESSIONAL PAPER No. 39b Di Areola nearly or quite obliterated C. fodiens and diogenes. D2 Areola broad. El Rostrum nearly square C. hartonii bartonii. Eg Rostrum oblong
![. The Eurypterida of New York. Eurypterida; Paleontology. THE EURYPTERIDA OF NEW YORK 415 convex, the antelateral angles prominent, well rounded; the basal margin straight transverse. The lateral eyes are large, a little more than one third the length of the carapace, subcircular, situated as stated. The type is 4.7 mm long and 5.5 mm wide. Stylonunis modestus nov. See text figures 99-101 This species is based on several small carapaces with portions of the abdomen and a leg [see text fig. 99] which suggest the following description: Carapace subrectangular, broad, length to width as 5:8. Late Stock Photo](https://c8.alamy.com/comp/PFY1R3/the-eurypterida-of-new-york-eurypterida-paleontology-the-eurypterida-of-new-york-415-convex-the-antelateral-angles-prominent-well-rounded-the-basal-margin-straight-transverse-the-lateral-eyes-are-large-a-little-more-than-one-third-the-length-of-the-carapace-subcircular-situated-as-stated-the-type-is-47-mm-long-and-55-mm-wide-stylonunis-modestus-nov-see-text-figures-99-101-this-species-is-based-on-several-small-carapaces-with-portions-of-the-abdomen-and-a-leg-see-text-fig-99-which-suggest-the-following-description-carapace-subrectangular-broad-length-to-width-as-58-late-PFY1R3.jpg ". The Eurypterida of New York. Eurypterida; Paleontology. THE EURYPTERIDA OF NEW YORK 415 convex, the antelateral angles prominent, well rounded; the basal margin straight transverse. The lateral eyes are large, a little more than one third the length of the carapace, subcircular, situated as stated. The type is 4.7 mm long and 5.5 mm wide. Stylonunis modestus nov. See text figures 99-101 This species is based on several small carapaces with portions of the abdomen and a leg [see text fig. 99] which suggest the following description: Carapace subrectangular, broad, length to width as 5:8. Late Stock Photo")