293 
Omolepida, Siaphos, Rhodona, Soridia, Trachydosaurus, 
Cyclodus, Silubosaurus, Egernia, Tropidoleipsma. 
The NYCTISAURA are also fairly numerous, and are 
represented by the genera Acdura, Straphuira, Diplodactylus, 
Peripia, Gehyra, Goniodactylus, and the very peculiar and 
strictly Australian genus Phyllurus. 
The tribe of the STROBILOSAURA is confined in Aus- 
tralia to the family AGAmiIpm, and to the genera Tiaris, 
Chelosauria, Gindalia, Physignathus, Chiamydosaurus, Lop- 
hognathus, Diporophora, Grammatophora (many species), and 
the very remarkable genus, Moloch. 
The Class Agabhinia is limited in ee to the one 
Order, the Barracuia SALIENTIA, or Tailless Amphibia. 
The Cecilide and the Urodela are unknown. The number of 
described species is about 50, and nearly half of these belong 
to the family of Hylidae, or Tree Frogs, and none of the wenera 
of that family are peculiar to the country. 
The Ranrp#&, on the other hand, exhibit a decidedly local 
character ; the genera JZyzophyes, Tymnodynastes, Cr yptolis, 
Crinia, Hyperolia, Cheiroleptis, Heleioporous, Pseudophryne, 
Notadon, and Myobatrachus being strictly Australian. 
The Fifth Class of the Vertebrata, the Pisces, are very 
numerous in Australia. They were catalogued by the Hon. 
W. Macleay, F.L.S., at 1291 species in 1883, and as over 100 
species have since been described by Chas. de Vi is, Director of 
the Queensland Museum, they may now be estimated at 1400, 
or one-seventh of the total number of species of fish on the 
globe, which may be roughly taken at 10,000. There is, as 
might be expected from the limitless nature of the element 
they inhabit, less speciality among the Fishes than among the 
Land heat ani c but still there is sufficient to give an easily 
recognisable character to the Australian Fauna. The Fresh- 
Ww ater Fishes, though not numerous, are solely, or almost solely, 
of genera unknown elsewhere. The Fishes of the Sea Coast 
are to a much less degree distinct from those of other places, 
while the Ocean, or Deep-sea Fishes, seem to differ very little 
from those of the rest of the world. 
There are among this Class also, as with the Birds, wide 
differences in the Fauna in different parts of Australia, arising 
from climate, temperature, currents, and other causes; thus 
the Fishes of the Victorian, South Australian, and Tasmanian 
Coasts are almost entirely different from those of the warm 
regions of the north, where the Polynesian type predominates ; 
mixed towards the north-west with Indo-Malayan forms; while 
the coast of New South Wales, with its warm current, forms 
