294 
the meeting-ground of the Fishes of both zones. The Fishes 
of the West Coast are but little known. 
There are about 200 species of Percoid Fishes in Australia. Of 
the group PERCINA, there are a few species of ates, which are 
the best fishes of the Hast Coast and Victorian rivers of strictly 
Australian genera—JMicroperca and Enoplosus. The SEr- 
RANINA or Rock Cod groups are numerous, the genus Ser7anus 
generally occupying the warmer seas, and Plect:opoma the tem- 
perate ; JZesoprion is also numerously represented. There are 
several other genera, but the most distinctive are J/yriodon and 
Glaucosoma. ‘There are two species of Priacanthus in Aus- 
tralian waters. The Apogonina are small fishes, and present 
no forms of a marked local character. The genus Ambassis 
is found in the north, but in other parts its place seems to be 
occupied by Pseudo-ambassis, a genus only found in Australia; 
Kdelia, Acanthoperca, and Mannoperca are also Australian 
genera belonging to this group. Some species of the genera 
Apogon and Apogonicithys are inhabitants of fresh water, and 
Castelnan’s genus Gulliveria is entirely a river fish. The group 
GRYSTINA consists, with a few exceptions, of freshwater fishes, 
mostly of considerable size and great value. The chief excep- 
tion to this rule is the genus Arripis, of which there are two 
species ;-the one best known, Arvipis salar, the Salmon of the 
Colonies, is a handsome fish of large size, which frequently 
appears on the coast of New South Wales and Victoria in 
large shoals, and is most destructive to other fish ; it is of little 
value for food, and in form and habit resembles more one of 
the raptorial Scombride than. a true perch. The Freshwater 
genera of this group are Oligorus, the genus of the far-famed 
“ Murray Cod,” of which some species are found in rivers on 
the Eastern Coast, and also in salt water. Ctenolates, several 
species, fine fish inhabiting the Murray system of rivers; 
Murrayia, the same; Riverina, the same; Dules, northern 
rivers; and Therapon, many species inhabiting all rivers, and 
some species Marine Iishes. 
The group PristipoMiNa contains a number of species of 
the genera Pristtpoma, Dagrammo, Gerres, Scolopsis, Dentex, 
Apharens, &e.; only two genera seem remarkable—Hypero- 
glyphe and Histiophorus: the latter contains two species, 
large fishes, and apparently very rare. 
The SQUAMIPINNES are rare in the temperate parts of the 
Australian seas; but in the tropical regions the genera 
Chetodon, EHeniochus, Holacanthus, and Chelmo become 
abundant. The genera Scorpis and Atypus placed in this 
family are almost exclusively Australian forms. ‘The NaANDIDZz 
are only represented by a very few species of Plesiops and 
Trachinops, Australian forms, to which may be added the 
genus Ruppellia of Castelnau. The true Nanprpm@ (fresh- 
