Pomacentridæ.

Body compressed, more or less short, covered with ctenoid scales. Dentition feeble, palate smooth. The lateral line does not extend to the caudal fin or it is interrupted. One dorsal fin, with the spinous portion as well developed as the soft, or more. Two, sometimes three, anal spines; the soft anal similar to the soft dorsal. Ventral fins thoracic, with one spine and five soft rays. Branchiostegals five, six, or seven; gills three and a half; pseudobranchiæ and air-bladder present. Pyloric appendages in small number; intestinal tract of moderate length. Tropical seas.

Pomacentrus unifasciatus. Port Jackson.

Dascyllus aruanus. Coast of New Zealand.

Parma microlepis. Port Jackson.

——squamipinnis. Ditto.

——polylepis. Norfolk Island.

Heliastes hypsilepis. Port Jackson.