CHAP. V.] CLASSIFICATION, 
99 
The Ophidia, or Snakes, form the first order and are classified 
as follows :— 
Fam. 
1. Typhlopide 
2. Tortricide ... . 
3 Rnopalivdea Burrowing Snakes. 
4. Uropeltide 
5. Calamaride Dwarf ground-snakes. 
6. Oligodontide. 
7. Colubride ... Colubrine Snakes. 
8. Homalopside Fresh-water Snakes. 
9. Psammophide ... Desert-snakes. 
Innocuous Snakes ¢ 10. Rachiodontide. 
11. Dendrophide Tree-snakes. 
12. Dryiophide Whip-snakes. 
13. Dipsaside ... Nocturnal tree-snakes. 
14, Scytalide. 
15. Lycodontide ... Fanged ground-snakes. 
16. Amblycephalide  Blunt-heads, 
17. Pythonide .. Pythons. 
18. Erycide ... ...  Sand-snakes. 
19. Acrochordide ... Wart-snakes. 
20. Elapide ... .., Cobras, &c. 
Venomous Colubrine ) 21. Dendraspidide. 
Snakes 22. Atractaspidide. 
23. Hydrophide Sea-snakes. 
Salah 24. Crotalide ... Pit-vipers. 
. Viperme Snakes 4 5 Viperide True vipers 
The second order, Lacertilia, are arranged as follows :—. 
26. 
27. 
28. 
29. 
30. 
31. 
32. 
33. 
34. 
35. 
36. 
37. 
38. 
39. 
40, 
41. 
Fam. 
Trogonophide .. 
Chirotide 
Amphisbenide 
Lepidosternide 
Varanidée 
Helodermide. 
Teidee 
Lacertide « 
Zonuride 
Chalcide. 
Anadiade. 
Chirocolide. 
Iphisade. 
Cercosauride. 
Chameesauride. 
Gymnopthalmide 
Amphisbenians. 
Water Lizards. 
Teguexins 
! Land Lizards 
Gape-eyed Scinks. 
42. Two-legged Lizards. 
43. 
Pygopodidee 
Aprasiade. 
