EXPLANATION OF THE FIGURES. 



PLATE IX. 



Fig. 1. — Ventral view of the shf 11 of Emus meleagris. 



Fig. 2.— Dorsal view of the shell of CJirpsemps marginata: a, 

 dorsal plaies; 6, cestui plates; c, marginal plutts; d, nuchal plate. 



Fig. 3.— Ventral view of the shell of Chrysemys maryinata: a, 

 gular plate; 6, postgular plate; c, pectoral plate; d, abdominal plate; 

 e, preatial plate;/, anal plate; g, axillar plate; h, inguinal plate. 



Fig. 4. — Veutral view of the shell of Aromochelys odoratus. 



PLATE X. 



Fig. 5.— Ventral view of the shell of Chehjdra serpentina. 



Fig. 6. — Bight ramus of mandible of Malacochmmys geo- 

 graphicus. 



Fig. 7.— Right ramus of mandible of M. lesueuri. 



Fig. 8. — Ventral view of the skull of M. geographicus : mx 

 maxilla; v vomer; j?/, palatine bone. 



Fig. 9.— Ventral view of the skull of M. lesueuri. Same bones, 

 outlined as in Fig. 8, 



PLATE XL 



Fig. 10.— Feet of Cistudo Carolina: a, fore foot; h, hind foot. 

 Fig. 11.— Feet of Chrysemys mnrginata : a, fore foot; b, hind foot. 

 Fig. 12.— Feet of Emgs meleagris: a, fore foot; 6, hind foot. 



PLATE XIL 



Fig. 13. — Aspidonectes spinifer, dorsal view. 

 Fig. 14, — The same, ventral view. 



PLATE XIII. 



Fig. 15. — Ventral view of the head of Elaphis ohsoletus : I, in- 

 fralabials; in, submentals; 7i, ventrals. 



Fig. 16. — Dorsal view of the head of E. ohsoletus: a, rostral 

 plate; h, internasal; c, prefrontal; d, frontal; e, supraorbital; /, parie- 

 tal; 0. dorsals. 



Fig. 17.— Lateral view of the head of E. ohsoletus: ^r, nasals; 

 h, loreal; i, anteorbital; j, postorbitals; Zc, supralabials; Z, infralabials; 

 0, dorsals. 



