388 



GEOGRAPHICAL ZOOLOGY. 



[part IV. 



large species belonging to the Pythonidse, so that we are evi- 

 dently still very far from knowing anything of the earliest forms 

 of this order. In some of the later Tertiary deposits the poison 

 fangs of venomous species have been found ; also a Colubrine 

 snake from the Upper Miocene of the South of France. 



Order II.— LAC EET ILIA. 



Family 26.— TROGONOPHID^E. (1 Genus, 1 Species.) 



General Distribution. 



Neotropical 

 Sub-regions. 



Nearctic 

 Sub-regions. 



Pal^earctic i Ethiopian i Oriental 

 Sub-regions. Sub-regions. Sub-regions. 



Australian 

 Sub-regions. 



The single species of Trogonophis, forming this family, is found 

 only in North Africa. 



Family 27.— CHIROTID^E. (1 Genus, 1 Species.) 



Chirotes, the genus which constitutes this family, inhabits 

 Mexico, and has also been found in Missouri, one of the Southern 

 United States. 



Family 28.— AMPHTSB^NID^. (1 Genus, 13 Species.) 



General Distribution. 



