SNAEES. 



31 



found in the southern parts of England, and the Common or 

 Ringed Snake {Tropidonotus mtrix). The Tree- or Whip- 

 Fig-. 17. 



pm 



PV^ 



Skull of Oommon Snake {Tropidonotus natrix). 



an. Angular. 

 ar. Articular. 

 bo. BaBioocipital. 

 hs. Basisphenoid. 

 ca. Columella auris, 

 a. Uentarj. 

 eo. Exoooipital. 

 epg. Eotopterygold. 



/, Frontal. 



m. Maxillary. 



n. Nasal. 



p. Parietal. 



pi. Palatine. 

 pm. Piraiiuaxillarjr. 

 prf. Prceft'ontal. 



pro. Prootic. 

 pg. Pterygoid. 

 py^. Poatfrontal. 

 ;. Quadrate. 

 so. Supraocoipital. 

 ste. Supratemporal. 

 V. Vomer. 



Snakes are exceedingly slender and elongate, and some are 

 exquisitely colouredj green being the predoruinant hue. They 



