76 



1 or 2 preoculars, 2 postoculars. Scales 13-17 smooth, 

 ventrals 122 to 245, anal and subcaudals double. Teeth 

 normal, numerous, small, equal. Length 12-24 inches. 



A. BALIODIRUS, Boie. 



Scales 18. Ventrals 122-132, subc. 65-72, labials 7 (3 &; 4). 

 Brown, with anterior dorsal series of black, white ocellated 

 spots ; belly pearl colour. 

 Straits. 



A. TENUiCEPS, Blyth. 



Scales 13. Ventrals 137, subc. 39. Labials 6 (3 and 4). 

 Scales about the vent and root of the tail are keeled. 

 Blackish ash, belly white. 

 Himalayas. 



A. Fuscus, Bhjth. 



Scales 13. Ventrals 154-161, subc. 34-42. Labials 6 

 (3 and 4). Scales about the vent and root of the tail are 

 keeled in the male. Posterior frontals united into one 

 shield, (whence Giinther at first allotted this to a new 

 senus of Calamaridss, under the name of Trachischium 

 fuscum). Black above, whitish below. 

 Himalayas. 



A. RAPPii, Gthr. 



Scales 15. Ventrals 191-198, subc. 60. Labials 6 (3 & 4). 

 Black above, white below ; when young, grey with black 

 bars and collar. 

 Himalayas. 



A. BicoLOR, Blyth. 



Scales 17. Ventrals 210-221, subc. 75-80. Labials 6 

 (3). Frontals united into two transverse plates (whence 

 Mr. Theobald makes this a genus of Calamaridse and has 

 named it Grotea bicolor). Brown above, white below. 

 Assam. 



