. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. go COPEPODA has 4 Sp and i Sa but no spinulation anteriorly; the Ri I has 3 Sa + i Sp, the Ri II has 3 Sa + i Sp and the Ri III 5 S. The exopodite has 11 setae, and the Le has 7 long + 2 shorter ones. The maxillae are very characteristic by the strongly and suddenly convex outer margin of the basipodite, with a short concavity in the middle (text-fig. 22 b); the lobe I possesses a quite rudimentary spinelike Sp. i and a Sp. 2, which it about twice as long as the lobe itself; the strong spi
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. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. go COPEPODA has 4 Sp and i Sa but no spinulation anteriorly; the Ri I has 3 Sa + i Sp, the Ri II has 3 Sa + i Sp and the Ri III 5 S. The exopodite has 11 setae, and the Le has 7 long + 2 shorter ones. The maxillae are very characteristic by the strongly and suddenly convex outer margin of the basipodite, with a short concavity in the middle (text-fig. 22 b); the lobe I possesses a quite rudimentary spinelike Sp. i and a Sp. 2, which it about twice as long as the lobe itself; the strong spine of lobe IV is somewhat longer but scarcely stronger than that of lobe V. The third basipodite of the maxillipeds is i-2 as long as Basp. I—II and three times as long as Ri; the exterior margin of the second basipodite has no trace of lamina, and its fourth lobe bears 3 hairs and a sensory process (fig. 2 c PL III). The first pair of legs has the articulation between Re I and II indicatad by a faint line anteriorly, and sometimes a small incision laterally; the Se Re I is wanting; the St has the usual b d f. Text-fig. 23. Gaidius tenuispinus G. O. Sars. a. 9. Abdomen in lateral view X 33- 1>. Maxilla .sin. in posterior view. c. Pes IV sin. in posterior view X 82. d. cf- Pes V sin. X 140- e. Maxilla dext. in anterior view to show position of parasites X 60. f and g: the same parasites X iSo- h—j. Contorted bodies attached to the body-wall X 400. characteristic structure (PI. Ill fig. 2 d). The articulation between Re I and II in pes II and Ri I and II is as shown in Sars' figure well developed; the St has 25 teeth. The fourth pair of legs has the Re III three times as long as wide and the St. has 25 teeth, partly armed with accessory ones; the first basipodite has the usual marginal hairs substituted for by 30—40 stiff thin lamellous bristles, which are placed in about 5 rows along the inner margin, and in 2—3 parallel ones on posterior surface, the more posteriorly