SKELETON 



43 



Ccelopeltis) ; the maxillary may be much abbreviated 

 and movable vertically, as in the Viperidae ; the 

 pterygoids may taper and converge posteriorly, 

 without any connexion with the quadrate, as in the 

 Amblycephalidae ; the supratemporal may be much 



ccr 



an 



V" V 



cor 



Fig. 4 — Skull of Typhlops lumbvicalis. (From British Museum 



Catalogue of Snakes) 



Lettering of the bones as in Fig. 3 



reduced, and wedged in between the adjacent bones 

 of the cranium ; the quadrate may be short or ex- 

 tremely large ; the prefrontals may join in a median 

 suture in front of the frontals ; the dentary may be 

 freely movable, and detached from the articular 

 posteriorly. 



