58 THE POISONOUS SNAKES OF INDIA. 



Supplementary characters. — Supraocular absent, replaced by small 



A 



B 



Avdge 



Fig. 38. — Eristocophis McMahoni (nat. size), 

 scales. Nasal does not touch the rostral, nor the 1st supralabial. 

 Ilye. — Diameter less than the distance between eye and nostril ; 

 about half the distance to the labial margin ; 5 or 6 rows of small 

 scales between it and supralabials. 4th Supralabial not enlarged. 

 Sublinguals touch 3 infralabials, and 3 small scales behind. Infra- 

 labials 3, the 3rd touching 3 scales behind. Scales in the middle 

 of the body 23 to 27. FewiraZs ridged laterally. Subcaudals divided. 



Distribution. — Very little is known on this point. Baluchistan, 

 where it was discovered by Captain McMahon* when delimiting the 

 Afghan Baluch border, is probably the fringe of its distribution, 



• Now Sir A. H. McMahon. 



