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
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