28; 



Hylophorbus robustus (Blgr.). 

 Rana rugata v. Kamp. 



Sudest island. 



Genyophryne thomsoni Blgr. 



Duke of York island. 



Hyla infrafrenata Gthr. 

 Rana rugata v. Kamp. 



Faor. 



Rana rugata v. Kamp. 



Bertrand island. 

 Rana rugata v. Kamp. 



Bismarck arch. 



Hyla brachypus (Wern.). 



„ militaria (Ramsay). 

 Rana ventricosa Vogt. 



„ boulengeri (Bttgr.). 



Rana rugata v. Kamp. 

 „ solomonis (Blgr.). 

 „ punctata (Ptrs. & Dor.). 

 „ kreffti Blgr. 



Solomon islands. 



? Hyla atropunctata v. Kamp. 

 „ macrops Blgr. 

 „ thesaurensis Ptrs. 

 „ lutea Blgr. 

 „ solomonis Vogt. 

 Rana guppyi Blgr. 

 „ bufoniformis Blgr. 

 „ opisthodon Blgr. 

 „ rugata v. Kamp. 

 „ solomonis (Blgr.). 

 „ kreffti Blgr. 

 Ceratobatrachus guentheri Blgr. 

 Cornufer vitiensis (Girard). 



guppyi Blgr. 

 Batrachylodes vertebralis Blgr. 



Among the seven families of Amphibia, which inhabit the 

 Indo-Australian Archipelago two {Caeciliidae, Pelohatidae) are 

 indian, two [Cystignathidac, Hylidae) australian. The three 

 other ones {Biifonidae, Brevicipitidae^ Ranidae) contain both 

 indian and australian species; thej^ are, however, essentially 

 indian, only a few species of them inhabiting Australia; more- 

 over, in the case of the Biifonidae, the australian species 

 belong to genera entirely different from those of the Archi- 

 pelago. Hence we may assume that 5 families [Caeciliidae, 

 Pelobatidae, Biifonidae, Brevicipitidae, Ranidae) have reached 

 the Archipelago from the west, the 2 other ones [Cystigna- 

 tJiidae, Hylidae) from the east. 



As to the distribution in the ■ Archipelago itself the sub- 

 family Dyscopliinae of the Brevicipitidae is only known in a 

 few species from Sumatra and Borneo, the Caeciliidae in only 

 two species from Sumatra, Borneo, Java and a few smaller 

 surrounding islands, the Biifonidae reach eastward to Celebes 

 and Lombok. The Pelobatidae have a discontinuous distri- 

 bution, inhabiting Sumatra, Borneo and Java in the west. New 

 Guinea and the Aru islands in the east; the only eastern 

 species, however, belongs to an endemic genus, which perhaps 



