186 



cription, they both show the three black lines radiating from the 

 orbit and the black line across the bind part of the head. Besides the 

 two longitudinal lines on the flanks these specimens have series of two 

 and three black spots lying one above the other, on the sides of the 

 neck and also on part of the body. These combinations of spots re- 

 sembling those described in the specimen of Elaphis subradiatus froni 

 Flores confirm ray doubt as to the identity of that species. It may 

 be noted that the Leyden Museum is in the possession of a young 

 specimen of E. radiatus from Borneo resembling in all points the last 

 mentioned specimens from Java. 



Coryphodon. 



20. Coryphodon korros Reinwardt. 



Java: Buitenzorg, 3 spec. 



POTAMOPHILAE. 



Tropidonotus. 



21. Tropidonotus vittatus Linne. 



Java: Buitenzorg, 9 spec. 



22. Tropidonotus trianguligt rus Schlegel. 



Sumatra: Singkarah, 1 spec. 



„ Kaju tanam, 2 adult and 2 young specimens. 

 Amphiesma. 



23. Amphiesma subminiatum Reinwardt. 



Java : Buitenzorg, 6 spec. 



24. Amphiesma chrysargos Boie. 



Java : Tjibodas, 1 spec. 

 Sumatra: Kaju tanam, 3 spec. 

 The specimen from Tjibodas differs from the typical specimens in 

 having two praeoculars in stead of one, moreover the upper prae- 

 ocular on the left side has an incision indicating a division into three 

 praeocular shields. 



Lepidognathus nov. gen. 1 ). 



Head depressed, rostral as high as broad, loreal present, nasals on 



the upper side of the head separated by the anterior frontals. No la- 



bials entering the orbit, but the eye surrounded by a ring of small 



scales. Upper labials 12, resting on a row of very small trigonal scales, 



lj From Aetr/«, (fios) = scale, and yvaäos = w. 



