1890.] ON REPTILES, BATRACHIANSj ETC. FROM SUMATRA. 31 



The diameter of the eye equals hardly half its 

 distance from the mouth ; frontal much longer 

 than broad, once and a half as broad as the 



supraocular ; ventrals 208 H. elapoides 



(Florida). 



EXPLAIMATION OF PLATE II. 



Fig. I. Hoplocephalus melanurus, Blgr. 



2. „ woodfordii, Blgr. 



3. „ elapoides, Blgr. 



4. List of the Reptiles, Batracliians, and Freshwater Fishes 

 collected by Professor Moesch and Mr. Iversen in the 

 district of Deli, Sumatra. By G. A. Boulenger, F.Z.S. 



[Keceived December 30, 1889.] 



A few weeks ago I was requested by Dr. Giinther to name a col- 

 lection of Reptiles, Batrachians, and Freshwater Fishes from Deli and 

 Langkat, North-east Sumatra, transmitted to him for examination 

 by the collector. Professor Moesch, of Zurich. As the collection 

 contains, in addition to two novelties, representatives of a consider- 

 able number of species new to Sumatra, although previously known 

 from the Malay Peninsula or from the neighbouring islands, I 

 thought a full list would be of zoogeographical interest and offered 

 it to this Society for publication. On hearing of this Professor 

 Collett, of Christiania, very kindly proposed to submit to me for e.x- 

 amination a large collection brought together during a stay of 20 

 months precisely in the same localities by a preparator of his 

 Museum, Mr. Ivtrsen, which had reached him almost on the very day 

 he read the announcement of my paper. I gladly availed myself of 

 Prof. Collett's offer, and postponed the reading of my paper so as to 

 be able to incorporate in it the results of the examination of the 

 Iversen collection. In addition to a good number of species not in 

 the Moesch collection, the latter contains a new frog of the genus 

 Rhncophorus. In the following list I have marked M. the species 

 represented in Prof. Moesch's collection, I. those in Mr. Iversen's. 

 Small species are better represented in the former collection and large 

 ones in the latter, so that the two together should give a very fair 

 idea of the herpetological and ichthyological faunas of this part of 

 Sumatra. I was much interested to find in Prof. Moesch's collection 

 examples of three of the newBatrachians which I described not long 

 ago from the hills near the town of Malacca, thus showing once more 

 how extremely alike the forest faunas of the opposite coasts of the 

 Straits of Malacca are. A fact worthy of record is that many of 

 the Batrachians in this collection, however widely remote their 

 affinities, are spotted or ornamented with bright carmine, a colour 

 which is by no means frequent in Batrachians. Thus out of the 



