CHAP. V] 



CLASSIFICATION. 



99 



The Ophidia, or Snakes, form the first order and are classified 

 as follows : — 



Innocuous Snakes* 



Fam. 



1. Typhlopidae 



2. Tortricidae 



3. Xenopeltidae 



4. Uropeltidae 



5. Calaniaridae 



6. Oligodontidae. 



7. Colubridae 



8. Homalopsidae .. 



9. Psammophidae .. 



10. Rachiodontidae. 



11. Dendrophidae .. 



12. Dryiophidae 



13. Dipsasidse 



14. Scytalidae. 



15. Lycodontidae 



16. Amblycephalidae 



17. Pythonidae 



18. Erycidae 



19. Acrochordidae ... 



(20. Elapidae ... 



Venomous Colubrine 1 21. Dendraspididae. 



Snakes j 22. Atractaspididae. 



' 23. Hydrophidae 



Burrowing Snakes. 



Dwarf ground-snakes. 



Colubrine Snakes. 

 Fresh-water Snakes. 

 Desert-snakes. 



Tree-snakes. 

 Whip-snakes. 

 Nocturnal tree-snakes. 



Fanged ground-snakes. 



Blunt-heads. 



Pythons. 



Sand-snakes. 



Wart-snakes. 



Cobras, &c. 



c 24 

 Viperine Snakes ... < 9f / 



Crotalidae 

 Viperidae 



Sea-snakes. 



Pit-vipers. 

 True vipers 



The second order, Lacertilia, are arranged as follows :- 



Fam. 



26. Trogonophidae ... 



27. Chirotidae 



28. Amphisbaenidae 



29. Lepidosternidae 



30. Varanidae 



31. Helodermidae. 



32. Teidae 



33. Lacertidae 



34. Zonuridae 



35. Chalcidae. 



36. Anadiadae. 



37. Chirocolidae. 



38. Iphisadae. 



39. Cercosauridae. 



40. Chamaesauridae. 



41. Gymnopthalmidae 



42. Pygopodidae 



43. Aprasiatdae. 



> Amphisbaenians. 



Water Lizards. 



Teguexins 

 Land Lizards 



Gape-eyed Scinks. 

 Two-legged Lizards. 



