74. 



T. EFFRENE, Cantor. 



Ventrals 215-22$, subc. 72-101. Black above and belo-w, 

 with complete buff rings, and buff labial streak. 

 Solitary museum specimen from Penang. 



T. ATROPURPURECM, Cantor. 



Ventrals 257, subc. 91. Purple, marbled with black and 

 white. 



Solitary museum specimen from Tenasserim. 



LEPTORHYTAON, Gunther. 



Loreal present ; nasal single, pierced by the nostril. 

 Scales 17, smooth. Anal bifid. 



L. JARA, Shaw. 



Ventrals 167-175, subc. 56-63. Brown, each scale with 

 two white dots ; generally a white collar ; belly white. 

 Assam, Ganjam, Anamullays. 



OPHITES, Wagler. 



Loreal present ; preocular sometimes absent. Scales 17, 

 keeled. Anal bifid. 



0. SUBCINCTUS, Boie. 



Ventrals 198-221, subc. 69-82. Loreal enters the orbit, 

 re-placing the preocular. Black, with whitish cross-bands 

 and collar. 

 Straits. 



0. ALBOFuseus, D. and E. 



Ventrals 256, subc. 204 (tail \). Preocular present. Light 

 reddish, with broad brown cross-bands; reddish white 

 collar. 



Straits. 



CERCASPIS, Wagler. 



Scales 19, strongly keeled. Ventrals angulated; 8^6- 

 caudals entire. 



