FAMILY 29.-TEUTHIDIDÆ. (1 Genus, 29 Species.)

"Marine, herbivorous fishes, with compressed, oblong, smallscaled bodies."

DISTRIBUTION.-Eastern tropical seas, from Bourbon and the Red Sea to the Marianne and Fiji Islands.

FAMILY 30.-ACRONURIDE. (5 Genera, 64 Species.) "Marine, herbivorous fishes, with compressed, minutely-scaled bodies."

DISTRIBUTION.-All tropical seas, but most abundant in the Malay region, and extending to Japan and New Zealand.

FAMILY 31.-HOPLEGNATHIDE. (1 Genus, 3 Species.) "Marine fishes, with compressed elevated bodies, covered with very small toothed scales."

DISTRIBUTION.-Seas of Australia, China, and Japan.

FAMILY 32.-MALACANTHIDÆ. (1 Genus, 3 Species.) "Marine fishes, with elongate bodies covered with very small scales, and with very long dorsal and anal fins."

DISTRIBUTION.-Atlantic coasts of Tropical America, Mauritius, and New Guinea.

FAMILY 33.-NANDIDE. (6 Genera, 14 Species.)

"Marine or fresh-water carnivorous fishes, with oblong, compressed, scaly bodies."

DISTRIBUTION.-From the Red Sea to the coasts of China and Australia; and the fresh waters of the Neotropical and Oriental regions. Badis, Nandus, and Catopra inhabit the

rivers of India and the Malay Islands; Acharnes the rivers of British Guiana.

FAMILY 34.-POLYCENTRIDE. (2 Genera, 3 Species.) "Fresh-water carnivorous fishes, with compressed elevated scaly bodies, and many-spined dorsal and anal fins.”

DISTRIBUTION.-Rivers of Tropical America.

FAMILY 35.-LABYRINTHICI. (9 Genera, 25 Species.) "Fresh-water fishes, with compressed oblong bodies, and capable of living for some time out of water or in dried mud."

DISTRIBUTION.-Freshwaters of South Africa and the East Indies from the Mauritius to China, the Philippines, Celebes, and Amboyna.

FAMILY 36.-LUCIOCEPHALIDE. (1 Genus, 1 Species.) "Fresh-water fish, with elongate scaled body, and a dilated branchial membrane."

DISTRIBUTION.-Rivers of Borneo, Biliton, and Banca.

FAMILY 37.-ATHERINIDE. (3 Genera, 39 Species.) "Marine or fresh-water carnivorous fishes, with subcylindrical scaled bodies, and feeble dentition."

DISTRIBUTION.-All temperate and tropical seas, from Scotland and New York to the Straits of Magellan and Tasmania.

Atherina presbyter occurs in British seas. and Atherinichthis are found in fresh-water Europe, America, and Australia.

Species of Atherina

lakes and rivers in

FAMILY 38.-MUGILIDÆ. (3 Genera, 78 Species.)

"Fresh-water and marine fishes, with oblong compressed bodies, cycloid scales, and small mouths, often without teeth."

DISTRIBUTION.-Coasts and fresh waters of all temperate and tropical regions.

Mugil (66 sp.) is mostly marine, and is very widely distributed; several species (Grey Mullets) occur on the British coasts. Agonostoma (9 sp.) is confined to the fresh waters of the West Indies, Central America, New Zealand, Australia, Celebes, and the Comoro Islands. Myxus (3 sp.) is marine, and occurs both in the Atlantic and Pacific.

FAMILY 39.-OPHIOCEPHALIDE. (2 Genera, 26 Species.) "Fresh-water fishes, with elongate subcylindrical scaled bodies; often leaving the water for a considerable time."

DISTRIBUTION.-Rivers of the Oriental region:-India, Ceylon, China, Malay Islands to Philippines and Borneo.

FAMILY 40. TRICHONOTIDE. (2 Genera, 2 Species.) "Marine carnivorous fishes, with elongate subcylindrical bodies, cycloid scales, and eyes directed upwards.”

DISTRIBUTION.-Coasts of Celebes, Ceram, and New Zealand.

FAMILY 41.-CEPOLIDE. (1 Genus, 7 Species.)

"Marine fishes, with very long, compressed, band-like bodies, covered with small cycloid scales."

DISTRIBUTION.-Temperate seas of Western Europe and Eastern Asia, and one species in the Malayan Seas.

Cepola rubescens (the Band fish) ranges from Scotland to the Mediterranean. All the other species but one are from Japan.

FAMILY 42.-GOBIESOCIDÆ. (9 Genera, 21 Species.) "Carnivorous marine fishes, elongate, anteriorly depressed and scaleless, with dorsal fin on the tail."

DISTRIBUTION.-Temperate and tropical seas; Scandinavia to the Cape, California to Chili, West Indies, Red Sea, Australia, New Zealand, and Fiji Islands.

Three species of Lepadogaster have occurred in the English Channel.

FAMILY 43.-PSYCHROLUTIDE. (1 Genus, 1 Species.)

A large-headed, elongate, naked marine fish, with small teeth, and dorsal fin on the tail."

DISTRIBUTION.-West Coast of North America (Vancouver's

Island.)

FAMILY 44.-CENTRISCIDE. (2 Genera, 7 Species.) "Marine fishes, with compressed, oblong or elevated bodies, elongate tubular mouth and no teeth."

DISTRIBUTION.-West Coast of Europe and Africa, Mediterranean, Indian Ocean to Java, Philippines, and Japan.

A species of Centriscus has occurred on the South Coast of England, and another species is found both at Madeira and Japan.

FAMILY 45.-FISTULARIDE. (2 Genera, 4 Species.)

"Marine fishes, very elongate, with long tubular mouth and small teeth."

DISTRIBUTION.-Tropical seas, both in the Atlantic and Indian Ocean, and as far east as the New Hebrides.

FAMILY 46.-MASTACEMBELIDE.

(2 Genera, 9 Species.)

"Fresh-water fishes, with eel-like bodies and very long dorsal

fin."

DISTRIBUTION.-Rivers of the Oriental region, one species from Ceram (?).

FAMILY 47.-NOTACANTHI. (1 Genus, 5 Species.) "Marine fishes, with elongate bodies covered with very small scales, and snout protruding beyond the mouth."

DISTRIBUTION.-Greenland, Mediterranean, and West Aus

tralia.

Order II.-ACANTHOPTERYGII PHARYNGOGNATHI.

FAMILY 48.-POMACENTRIDÆ. (3 Genera, 143 Species.) "Marine fishes, with short compressed bodies covered with toothed scales, and with feeble dentition."

DISTRIBUTION.-Tropical parts of Pacific and Indian Ocean, less numerous in Tropical Atlantic, a few reaching the Mediterranean, Japan, and South Australia. Pomacentrus, Glyphidodon, and Heliastes are Atlantic genera.

FAMILY 49.-LABRIDE. (46 Genera, 396 Species.)

"Herbivorous or carnivorous marine fishes, with elongate bodies covered with cycloid scales, and teeth adapted for crushing the shells of mollusca."

DISTRIBUTION-Temperate and tropical regions of all parts of the globe.

The genera Labrus, Crenilabrus, Ctenolabrus, Acantholabrus, Centrolabrus, and Coris, have occurred in British seas, and all of