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 ILLACERTILIA. 



FAMILY 26. TROGONOPHID^E. (1 Genus, 1 Species.) 

 GENERAL DISTRIBUTION. 



NEOTROPICAL I NEARCTIC I PALJEARCTIC > ETHIOPIAN j ORIENTAL I AUSTRALIAN 

 SUB-REGIONS. SUB-BEOIONS. SUB-REGIONS. SUB-REGIONS. SOB-REGIONS. SUB-REGIONS. 



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

 only in North Africa. 



FAMILY 27. CHIROTULE. (1 Genus, 1 Species.) 



GENERAL DISTRIBUTION. 



Chirotes, the genus which constitutes this family, inhabits 

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

 United States. 



FAMILY 28. AMPHISB^NID^. (1 Genus, 13 Species.) 



GENERAL DISTRIBUTION. 



