LESSER SUNDA ISLANDS. 31 



on the Greater Sunda Islands, and also on Celebes, are present in this group, 

 one species, Hyla everetti, being confined to Ombaai, Timor, Savu, and Sumba; 

 while the Papuasian, H. dolichopsis, has been reported from Timor, though it 

 must be confessed that the same form has also turned up recently on Java as an 

 accidental immigrant; it is not, however, as likely to have been accidentally 

 introduced into Timor. 



Since the preceding pages were written I have received the report on the 

 reptile and amphibian collections of the Elbert-Sunda-Expedition des Frankfurter 

 Vereins flir geographie und statistic by Jean Roux. Three new species are 

 described: — Typhlops elberti Roux from Lombok, and Cylindrophis boulengeri 

 Roux, and Rana elberti Roux from the island of Wetter. This island remained 

 hitherto unexplored herpetologically, although the birds have been made known 

 by Rothschild's collectors. Aside from these interesting novelties the paper 

 records most important additions to the knowledge of the extension of the fauna 

 of southern Celebes to the islands of Kabaeiia and Buton. This condition was 

 exactly what might have been expected. From the island of Wetter, besides 

 the new species, six other reptiles were recorded, all species wide ranging through- 

 out the Archipelago except Sphenomorphus florensis (M. Weber), which does 

 not range beyond the limits of the Lesser Sunda chain. On this island only two 

 amphibians were found; a new subspecies, or island race, of Rana tigerina, 

 called verruculosa Roux, and the new Rana elberti Roux. 



From Lombok came the greatest surprises, which prove that, so far as 

 reptiles are concerned, the island is faunistically as Malayan as Bali. Among 

 the new discoveries were Gekko gecko (Linne), Draco volans Linne, Dibamus 

 novae-guineae Dum. & Bibr., Gonyosoma (called Coluber) oxycephala (Boie), 

 Elaphe (also called Coluber) subradiata (Schleg.), and Naia naia (Linne). The 

 addition of these to the list of species already known goes far to enable us to 

 form a more accurate idea of the existing conditions on this most important 

 island. 



Among Amphibia we are most surprised to find Rana macrodon Dum. & Bibr. 

 and Rana modesta Blgr. existing on the same island. I had supposed that the 

 latter species was a derivative of the former, which had replaced the parent 

 species after isolation on Celebes. The individuals of R. modesta may have got 

 to Lombok by the Celebes-Lesser Sunda Bridge and then met again the parent 

 species, which had come earlier from Java to Lombok and remained specifically 

 unchanged upon that island. Thus R. modesta probably came by the same 

 route and contemporaneously with Sphenophryne. If earlier, it might con- 



