TORTOISES. 33 



Testudo Scorpoides, Linn. S. N. i. 152. Emys scorpoidea, Schw. 

 Prod. i. 312. T. Pensylvanica, var. Shaiv, Zool. Hi. t. 15. T. 

 tricarinata, Daud. ii. 178. Schoepf. t. 2. Shaw, Zool. ii. t. 1 J . T. 

 Retzii, Daud. Rept. ii. 174. 



Shell oblong, rather compressed, with three continuous keels ; 

 dorsal shields longly 6-sided, slightly imbricate ; sternum as broad 

 and large as the opening, lobes entire, broad, longer than the mid- 

 dle lobe ; gular plate long, triangular, symphysis narrow, as long 

 as the abdominal shields. 



a. Shell only, swollen and convex, wanting some plates. C. Ame- 



rica. Presented by J. E. Gray, Esq. 



b. Stuffed (not good state), wants dorsal plates. C. America. 



c. Animal dry, shell wants dorsal plates. C. America. 



K. scorpoides, var. acuta, Gray, Syn. 14, t. 7, /'. 1. 



d. Adult, animal and shell iu spirits. Back very convex, rounded. 

 Tropical America. Presented by Thomas Bell, Esq. 



b. Sternum lobes narrower than the opening, truncated or nicked 

 behind. Kinosternon. 



The Oblong Swanka. Kinosternon oblongum. Cinoster- 

 mon hirtipes, Wayler, Syst. t. 5,/. 29, 30? Icon. A. t. 30 ? Dum. 

 et Bib. E. G. ii. 570? 



Shell oblong, smooth, olive, convex, flattish above, sternum 

 oblong, narrower than the opening, entire in front nicked behind, 

 head large, yellow-spotted, with a streak over each eye to the side 

 of neck. 



a. Shell and animal dry. Gular plate triangular as long as broad. 



America. 



b. Shell and dry animal. Gular plate broad triangular. America. 



Doubleday's Swanka. Kinosternon Doubledayii. 



Shell narrow, oblong, smooth, sides convex, back flattened ; 

 sternum high on the sides, lobes much narrower than the cavity, 

 rounded in front, bifid behind, the symphysis very short. 



a. Shell only, much worn. California. 



The Mud Tortoise. Kinosternon Pennsylvanicum, Gray, 

 Syn. t. 6,f. 4. Bell, Zool. Journ. ii. 209. Holbrook, N. A. Herp. 

 iii.23, t.3. Wayler, Syst. 137. Dum. et Bib. E. G. ii. 367. Tes- 

 tudo P. Bosc. Gmelin, S. N. i. 1042. Schoepf. t. 24, /'. a. 

 Shaw, Zool. t.\4,f.2. Daud. R. ii. t. 24, /. 1 Sr 2. Say, J. A. 

 N. S. Phil. iv. 266 Merrem, Tent. 27. Tentudo giutinata, 

 Daud. R. t. 24, f. 4. Schoepf. t. 24, f. 6. Terrapene Boscii, Mer. 



Shell roundish oblong, depressed, brown, keelless (3-keeled 

 when young), dorsal shields flattened, lobe of sternum rather nar- 

 rower than the cavity of the thorax, rounded in front bifid behind; 

 head pale lined, chin 2-bearded ; tail clawed; jaws notched. 



