( 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 labiajs. 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. 



Xenueelaps. 



Like ' 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 VIPERID^. 

 No pit in the loreal region. 



