THE COMMON INDIAN SNAKES. 43 



Dentition. — From 7 sluills in my collection, including Variety 

 typica, Karachi (Ventrals 201 + 114), Variety typica, Chitral 

 (Ventrals 239 + 136), Variety rhodorhachis, Chitral (Ventrals 

 215 + 113), Variety typica, Sukkur (Ventrals 204+121). Maxillary 

 10 to 14, slightly increasing backwards, then a gap that would 

 accommodate two teeth followed by a pair of obliquely set, enlarged 

 teeth. Palatine, 9 to 11, the median about as long as the median 

 maxillary, slightly decreasing forwards and backwards. Pterygoid, 15 

 to 24, gradually decreasing backwards. Mandibular 15 (14 ?) to 

 20 (21 ?), the first 3 or 4 progressively increasing, the posterior 

 gradually decreasing. 



Plate. — Our illustrations are good, and show one of the commonest 

 colour forms. This Plate also contains three figures of another 

 member of the genus Zamenis, which will be discussed in the next 

 paper. 



(To be continued?) 



