109 



B. SEMIFASCIATUS, Kuhl. 



Also similar to B. cceruleus, but the tail has complete 

 black rings round it. 

 China. 



XENURELAPS, Gthr. 



Similar to Bungarus, but with double subcaudals. 



X. BUNGAROiDES, Ccmtor. 



Scales 15. Ventrals 224-237, subc. 44-46. Black, with 

 narrow white cross-bands directed forward ; white bands on 

 the head ; belly white, with irregular cross-bands, or red, 

 with black spots. 



Assam and Khasi Hills. 



MEGiEROPHIS, Gray. 

 Form similar to Bungarus, but with 13 rows of scales, the 

 vertebrals large, hexagonal. Anal and anterior subcaudals 

 entire. 



M. FLAVICEPS, Eeinhardt. 



Ventrals 209-226, subc. 38-52. Black, with a vertebral line 

 and zigzag lateral stripe, white anteriorly, red posteriorly ; 

 head and neck red ; beUy red, sometimes black anteriorly. 

 Straits. 



CALLOPHIS,* Gray. 



Body very long and slender ; head short, obtuse, not dis- 

 tinct from the neck ; tail short. Scales 13, vertebrals not 

 enlarged ; anal generally bifid ; subcaudals bifid. 



C. BiviKGATUS, Boie. 



Ventrals 248-284, subc. 38-50. Head, belly and tail, red ; 

 body blackj with a lateral zigzag white blue-margined stripe. 

 Upwards of 4 feet in length. 

 Straits. 



* Formerly elaps but this name is now restricted to the American 

 section of the genus. 



