393 



tcbra. Ceylon is comparatively rich in species ; but as in general 

 the Batrachians are adapted for Bpreading over a Hindi greater 

 space than other reptiles are, we do not find such B peculiar fauna of 

 them in this island. The following Bpeciefl are known to lie found in 



( Yvlon : — 



Rana kuklii. *I.va/iis variabilis. 



vittigera. * leucorhintu. 



txjruui. * pacilopleurus. 



he.radactyla. aurifatdatus. 



malabarica. Polyped. mierotympanum. 



Bufo melanostictus. maeulatus. 



* kelaartii. * eques. 



Kuloula pulchra. 



Only those species marked with an asterisk are peculiar, the others 

 exhibiting not even remarkable varieties. 



IV. Australian Region. 



Characteristic forms. — Myobatrachus, Limnodyna^tes,€hirolpptes, 

 Heleioporus, Upero/eia, Pseudophryne, Chelydobatrachus, Litoria, 

 Pelodryas. 



Forms common with other regions. — Cystiynathus, Hylarana, 

 Cornu/er, Platymantis. 



Of thirty species which are known to belong to this region, we 

 have on the average a single species to each 100,000 square miles, 

 and therefore only to each 33,000 square miles of the known part of 

 Australia and its islands. Just the half of the species are Opistho- 

 glossa platydactyla. 



Australia produces one Batrachian without a tongue ; and if there 

 should.be known such a Batrachian from the Indian region, all the 

 Aglossa would be equally distributed through the Tropical world, each 

 part producing a peculiar type, viz. Africa the genus Dactyletkra, 

 South America the genus Pi/xi, Australia that of Myobatrachus. 

 Secondly, this region is distinguished by the total absence of true 

 Bofuc&eand Hufonidce. Among other characteristic forms, Pelodryas 

 especially deserves to be mentioned, representing the genus /'/////- 

 lomedusa of the New World, but distinguished by a web between 

 the toes. Hylarana extends in one variety of //. erythraa to the 

 islands of the Pacific (S. Christoval); but the geographical distri- 

 bution of this genus is far from being known. On CyatiffnatAus, 

 Bee the notice given in the sixth Region. Finally, Comufer and 

 Platymantis respectively are known by two species, one of which be- 

 longs to islands of the Indian Archipelago, and the other to boom ol 

 the Pacific. Thus the Bratrachio-fauna of this region, though offer 



Dig well-distinguished generic forms, does not exhibit chaiact 



general that a peculiarity of the whole could be expressed is we found 



it with Snakes. At present there is not on.' Hat rachian known from 

 New Zealand. 



