Other genera belonging to this group are Aphritis, Acanthaphritis, Eleginus, Chænichthys, and Chimarrhichthys from the South Pacific and Antarctic zone; Cottoperca from the west coast of Patagonia; Percophis from the coast of Southern Brazil; and Trichodon from the coast of Kamtschatka.
3. In the Pinguipedina the body is covered with small scales; the eye lateral; the lateral line continuous; and the intermaxillary is armed with a larger tooth on its posterior portion, as in many Labroids.
Two genera, Pinguipes and Latilus, from various parts of tropical and sub-tropical seas, belong to this group.
4. In the Pseudochromides, the lateral line is interrupted or not continued to the caudal fin; they have one continuous dorsal only.
These fishes are inhabitants of coral reefs or coasts: Opisthognathus, Pseudochromis, Cichlops, and Pseudoplesiops.
5. In the Nototheniina the lateral line is interrupted; and the dorsal fin consists of two separate portions.
They (with others) represent in the Antarctic zone the Cottoids of the Northern Hemisphere: they have the same habits as their northern analogues. In Notothenia, which on the southern extremity of South America, in New Zealand, Kerguelen’s Land, etc., is represented by about twenty species, the body is covered with ctenoid scales, and the bones of the head are unarmed; whilst Harpagifer, a small species with a similar range as Notothenia, has the body naked, and the operculum and sub-operculum armed with long and strong spines.
Ninth Family—Malacanthidæ.
Body elongate, with very small scales; mouth with thick lips; a strong tooth posteriorly on the intermaxillary. Dorsal and anal fins very long, the former with a few simple rays anteriorly; ventrals thoracic, with one spine and five rays. Gill-opening wide, with the gill-membranes united below the throat. Ten abdominal and fourteen caudal vertebræ.
One genus only, Malacanthus, with three species from tropical seas.