Fig. 
PLATE 2. 
Recent and Fossil Ophidian Vertebre ; nat. size.‏ مهن 
1—4. Vertebrz from the middle of the body of a Python Sebe, twenty feet in length. 
2, 3'. A rib of the same Python. 
3". Section of the proximal end of a rib of the same Python, showing the medullary 
cavity. 
5—8. Vertebræ from the middle of the body of the Pa/eophis typheus. 
9—12. 
13—16. 
17—20. 
21—24. 
25—28. 
29—32. 
33—36. 
37—38. 
Corresponding vertebræ of a rattle-snake. (Crotalus.) 
Corresponding vertebræ of a hooded-snake. (Naja.) 
Corresponding vertebræ of a harmless snake. (Coluber elaphus.) 
Corresponding vertebræ of an African Eryx. 
Corresponding vertebræ of a sea-snake. (Hydrus bicolor.) 
Corresponding vertebrae of Palerya rhombifer. 
Corresponding vertebree of an Iguana. 
Corresponding vertebra of Palerya depressus. 
