Ill 



I 



C. MACULICEPS, Gthr. 



Ventrals 205-247, subc. 24-32. Brown ; 3 black lines run 

 from the snout to join a broad black collar ; belly red ; tail 

 black-rinored. 

 Straits. 



C. NIGRESCENS, Gthv. 



Ventrals 232-247, sjibc. 33-45 ; anal generally entire. 

 Upper parts blackish, lower parts red ; head marbled with 

 black ; a black cj collar ; a black, yellow-edged dorsal line. 

 Anamullays. 



Family XIX.— HYDROPHIDiE. 



Body cylindrical, compressed posteriorly ; tail strongly 

 compressed, forming a vertical fin. Head-shields pretty 

 regular, but no loreal, and usually only a single pair of 

 frontals ; nasals generally contiguous. In most genera there 

 are no ventrals. Scales generally tubercular and dull. All 

 provided with a poison-fang, followed by 3 or 4 ordinary 

 teeth. Eye very small. 



PLATURUS, Latreille. 



Head-shields normal ; 2 pairs of frontals, nostrils lateral, 

 nasals not contiguous. Scales smooth, ventrals well developed, 

 anal bifid ; subcaudals present. 



P. scuTATUS, Laur. 



Scales 21-23. Ventrals 213-241. Generally an azygos 

 shield between the posterior frontals. Black rings, head 

 yellow, with black postocular stripe and median stripe. 



P. FISCHERI, Jan. 



Scales 19. Ventrals 232-241. No azygos shield. About 

 30 black rings, and median head stripe. 



