TORTOISES. 15 



B. Vertebral plates 6-sided, margin subdentate. 



a. Asiatic. 



b. European. 



c. American. 



* Sternum nicked behind. 



f Shell with a continuous keel. 

 ft Shell tubercularly keeled, 

 fff Shell keelless or only keeled when young, neck streaked, 

 tttt Shell keelless, like the neck, yellow spotted. 



** Sternum truncated at each end, shields pale-edged. 

 *** Sternum acute at each end. E. Kinosternoides. 



A. Vertebral plate lozenge-shaped. Asiatic. 



The Pangshure. Emys tectum, Bell. Test. t. 1, /. 1 — 4. 

 Gray, Syn. 23, t. 25. Illust. Ind. Zool. ii. t. 72, /. 1, 2. Dum. 

 $• Bib. E. Gen. ii. 321. Schlegel, F. Jap. 51. E. trigibbosa, 

 Lesson, Bull. Sci. Nat. xxv. 121, #• Belanger, Voy. 29. Testudo 

 Pangshure, n. 4, and T. khagraskata, n. 16, B. Hamilton, MSS. 



Shell ovate, oblong, solid, olive, with a central interrupted red 

 streak ; back angularly elevated, compressed ; vertebral shields 

 elongated, six-sided, the 1st, 2nd and 3rd keeled, each produced 

 and subtubercular behind, margin quite entire, shelving ; sternum 

 flat keeled, sides high sloping ; head olive, with two broad orange 

 converging streaks ; neck with close olive lines. 



a, b, c. Adult, stuffed and in spirits. India. From M, Piquot's 

 collection. 



d. Adult, in spirits. 



e. Adult, stuffed. India. Presented by J. E. Gray, Esq. 



The Dura. Emys tentoria, Gray, Pr. Z. Soc. 1834. E. tec- 

 tum, adult, Gray, Illust. Ind. Zool. t. 72, /. 3. Testudo Dura, 

 B. Hamilton, MSS. 



Shell ovate oblong, olive ; back rather angularly compressed ; 

 shields slightly rugose, the first vertebral one four-sided, as broad 

 as long, the rest elongated, six-sided, keeled, the keel (of the 

 third especially) produced behind into a tubercle ; the marginal 

 and sternal plates yellow keeled ; sternum nearly flat, slightly ele- 

 vated, and keeled on the sides. 



a. Adult, 6 inches. Deccan. Presented by Colonel Sykes. 



Duvaucell's Emys. Emys Duvaucellii, Dum. &■ Bib. Erv. 

 Gen. ii. 334. 



Shell subcordiform, smooth, entire, convex, tent-like, greyish 

 edged with black, and with three black streaks, the side ones on 

 the upper edge of the costal plates ; vertebral plates quadrilateral, 

 oblong, very long, keeled on the hinder edge. 



Inhabits India, Bengal. In Mus. Paris. 



