. The Cambridge natural history. Zoology. 624 TELEOSTEI In Halosaurus tlie scales of the lateral line, which runs near the lower profile, are scarcely enlarged, and are destitute of luminous organs. HalosauricMliys differs in the union of the ventral fins with each otlier, as in Notacanthus. In Halosauropsis the scales of the lateral line are strongly enlarged and pouch- like, and bear photophores. This family is one of great antiquity, being represented in the Upper Cretaceous of Westphalia by UchidiwcejAalus, which, as shown by A. S. Woodward, appears to have been closely related to Halosaur
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. The Cambridge natural history. Zoology. 624 TELEOSTEI In Halosaurus tlie scales of the lateral line, which runs near the lower profile, are scarcely enlarged, and are destitute of luminous organs. HalosauricMliys differs in the union of the ventral fins with each otlier, as in Notacanthus. In Halosauropsis the scales of the lateral line are strongly enlarged and pouch- like, and bear photophores. This family is one of great antiquity, being represented in the Upper Cretaceous of Westphalia by UchidiwcejAalus, which, as shown by A. S. Woodward, appears to have been closely related to Halosaurus.. Fig. 379.—flalosanropsis macrochir, ^ nat. size. (After Gilnther.) Fam. 3. Lipogenyidae.—Similar to the preceding in shape and in the position of the dorsal fin, but with a toothless, roundish, inferior, suctorial mouth, and with the short dorsal and the long anal formed partly of spines and partly of soft rays. Head and body covered with minute scales; lateral line nearer the dorsal than the ventral profile. A'^entrals with 3 spines and 7 soft rays. A single species, Lipogenys gillii, from the North Atlantic, 865 fathoms. Fig. 380.—Lipogenys gillii. (After Goode and Bean.) Fam. 4. Notacanthidae.—Body elongate, covered with very small cycloid scales, the tail tapering to a point, without caudal fin; head scaly; mouth small, inferior, bordered by the prae- maxillaries only; jaws toothed ; no suborbitals; praeoperculum small; post-temporal replaced by ligament. Dorsal fin formed of a series of short disconnected spines; anal very long, formed partly of spines and partly of soft rays, extending to the end of the tail. Ventrals with 1 to 5 spines and 7 to 10 soft rays.. 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 work.. Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Si