( xxxvi ) 

 BUNGARUS. 



Scales smooth in 15 rows. The vertebral scales enlarged. Body- 

 ridged. 



Black, marked more or less with white ... B cseruleus. 

 Black and yellow banded ..". B. fasciatus. 



Head and vertebral line bright red ... B. flaviceps. 



Callophis. 



Body sub-cylindrical, very long and slender. Scales smooth 

 in 13 rows. 



6 upper labials. A vermilion vertebral line C. intestinalis. 

 6 upper labials. Head and neck black with 



a yellow (red ?) band behind the eyes ... C. annularis. 



6 upper labials. Head and neck black yel- 

 low spotted. Belly red ... C. trimaculatus. 



7 upper labials. A chain of distant black 



dots down either side of spine ... C. maculiceps. 



7 upper labials. Back blackish, belly red... C. nigrescens. 

 7 upper labials. A yellow band across the 



head behind the eyes . . . C. MacClellandii. 



7 upper labials. 40 black bars down the 



back. Belly red - ... C. cerasinus. 



7 upper labials. 5 black longitudinal bands C pentelineatus. 



Xenurelaps. 



Jiike ' Bungarus ' but body sub-cylindrical, 

 long and slender. 



Black with narrow white bars directed for- 

 ward ... X. bungaroides. 



III.— SUB-ORDER VIPERINE SNAKES. 



Poison gland present. A long perforated, erectile fang on a 

 very short maxillary bone. 



Family YIPERID^. 

 No pit in the loreal region. . 





