24 REPTILES. 



shield, and with two large oblong spots of irregular concentric 

 rings on each stern o-costal suture ; nuchal plate elongate, 1st ver- 

 tebral square, rather longer than broad, others wide, six-sided. 



a. Shell only. N. America. Louisiana. From Mr. J. Drum- 

 mond's collection. 



The Dark Hicotee. Emys rugosa, Gray, Syn. 30. Dum. 

 Sf Bib. E. G. ii. 284. Testudo r. Shaw, Zo'oL iii. 28, t. 4. E. 

 rugosa, Sagra, Cuba Rept. t. 2. Var. sternal shield pale, black- 

 edged. 



Shell ovate, oblong, rather tubercularly keeled, black above 

 and below, ornamented with yellow spots and lines, hinder edge 

 slightly serrated ; shields rugulose ; areola indistinct ; vertebral 

 shields 1st long, urceolate, 2nd, 3rd and 4th long, six-sided, 5th 

 broad, six-sided, marginal shields yellow, black-dotted. "Animal 

 brown, from head and nape greyish, with a pale streak from the 

 back of each eye.'' — Sagra. 



Inhabits America. Mus. Col. Surg. 



The Hicotee. Emys decussata, Bell, Test. t. 1. Gray, Syn. 

 28. D. C. ii. 22. Sagra, Cuba Rept. t. 1. Testudo serrata, 

 Daud. (not figure). Emys s. Schweig. E. serrata, var. Schle- 

 gel, F. Jap. 58. 



Shell oblong, bluntly keeled, hinder edge slightly toothed ; 

 dorsal shields rugulose, irregularly radiately grooved, uniform 

 pale brown, beneath yellowish, with obscure subocellate spots on 

 the axillary, inguinal, and on the suture of the marginal plates : 

 animal greenish ; cheek and throat indistinctly pale lined. 



a. Animal and shell, half grown. 6^ inches. West-India Islands, 



Cuba ? Presented by John Edw. Gray, Esq. 

 b and g. Half grown, or younger, 6 inches. 



c. Shell and skeleton, adult, 10 inches. Presented by J. E. Gray, 



Esq. 



d. Shell only, adult, 9^ inches. C. America. 



e. Shell only, adult ; and/. Shell only, half grown, more mottled. 



Presented by J. E. Gray, Esq. 



T roost's Emys. Emys Troostii, Holbrook, Amer. Herpet. i. 

 55, t. 4. 



Shell broad, depressed, squarish, blackish, varied with greyish 

 blotches, slightly serrated before and deeply behind ; plates 

 slightly longitudinally rugose, vertebral plates broader than long, 

 the 1st small, narrow, urceolate, 1st and 3rd very bluntly keeled, 

 nuchal plate very narrow, convex ; sternum broad, dirty yellow, 

 plates edged and varied with black ; head long, narrow, olive ; 

 throat pale olive, with paler lines ; upper jaw emarginate, lower 

 with a tooth ; claws elongate, stout. 



