SNAKES. 



19 



The majority of the members of series A. are harmless, but the 

 saliva of the Indian Bat-Snake affects small mammals : most' of 

 series B. are venomous, but not dangerously so ; but all the species 



I 



Hg. 17. 



prf f ff f t 



Skull of the Common Snake (Tropidonotus natrix). (No. 240) 

 From the left side (A), above (B), and below (C). 



Mi. Angular. 



/. Frontal. 



pro. Prootic. 



ar. Articular. 



m. Maxillary. 



pg. Pterygoid. 



bo. Basioccipital. 



n. Nasal. 



ptf. Postfroutal. 



bs. Basisphenoid. 



p. Parietal. 



q. Quadrate. 



ca. Columella auris. 



pi. Palatine. 



•so. Supraoccipital. 



d. Dentary. 



put. Piiemaxillary. 



ste. Supratemporal. 



eo. Exocoipital. 



prf. Prefrontal. 



v. Vomer. 



pg. Ectopterygoid. 







included in C. are deadly. Among the more noticeable specimens 

 belonging to the first group, reference may be made to the common 

 British Snake {'Tropidonotus natrix, 240) and a continental variety 



2 



