77 



A. OLivACEUS, Beddovie. 



Scales 17. Ventrals 224, subc. 75. Labials 5 (3). Dark 

 greenish olive, paler below; four dorsal series of small 

 black dots. 

 Nilgiris. 



A. SAGITTARIUS, Cantor. 



Scales 17. Ventrals 216-245, subc. 57-70. Labials 7 

 (S and 4). Keddish or greyish olive ; blackish dorsal line, 

 beneath whicl;i the colour darkens ; vertebral series of dots ; 

 head brown; dark collar edged with yellow ; belly yellowish, 

 with a blue lateral line and ventral dots. 

 Penang, Bengal. 



A. HUMBERTi, Jan. 



Scales 17. Ventrals 175, subc. 55. Labials 10 (4, 5 & 6) 

 7th and 9th contiguous below. Reddish olive ; punctulated 

 dorsal line, beneath which the colour darkens ; vertebral 

 series of black yeEowredged dots ; black, yellow-edged 

 collar ; belly white, dotted. 

 South of India, Ceylon. 



A. coLLARis, Gray. 



Scales 17. Ventrals 177, subc. 102. Tail nearly one- 

 third. Labials 10 (4, 5 and 6). Greyish brown, with 

 anterior vertebral series of black dots ; broad black collar 

 with posterior yellow edge, produced forwards to the eyes ; 

 belly white, dotted. 

 Himalayas. 



A. MELANOCEPHALUS, Gray. 



Scales 17. Ventrals 152, subc. 65. Labials 10 (4, 5 & 6) 

 7th and 9 th contiguous below. Light brown, with two 

 anterior whito stripes commencing from a black coUar, and 

 interrupted by square black spots ; belly white, spotted ; 

 head brown, lips yellow. Tail one-third (?). 



