REPTILES. 
286 
diverging from a yellow disc, which is composed of thirteen or 
fourteen pieces; marginal divisions from 24 to 26. Twelve 
inches long. Inhabits Africa. 
Division II.—Fluviatile Tortoises. 
Ge?ius 2.—EMYS.— Brongniart. 
Generic Character. —Upper shell gibbous, divided into large 
scutellae; feet with distinctly defined toes, furnished with 
crooked nails; toes more or less palmated, five on the anterior 
feet, and four on the posterior feet. 
Emys Europcea. — Speckled Tortoise. 
Plate LXIX. fig. 2. 
Shell ovate, a little convex, smooth, black, ornamented with 
yellow radiated dots; disc composed of 13 scutellffi, and the 
margin of 25; under shell cream-yellow, brown at the joints; 
the skin of the neck lax and wrinkled. Fifteen inches long. 
Inhabits Europe. 
Genus 3. — CISTUDA.— Fleming. 
Generic Character. — Upper shell emarginate in front, having 
two notches behind ; under shell with one or two moveable di¬ 
visions ; lips horny. 
Cistudo Amboynensis. — Amboyna Tortoise. 
Shell convex above, umber-brown, with a straw-yellow mar¬ 
gin ; head with yellow spots ; the breast-plate moveable both be¬ 
fore and behind. Fifteen inches long. Inhabits Amboyna. 
Division III.—Marine Tortoises. 
Genus 4. — CHELONURA.— Fleming. 
Generic Character. —Extremities incapable of being with¬ 
drawn under the shield; back-plate carinated, with acute pro¬ 
cesses behind; tail about the length of the shield. 
Chelonura serpentina — Snake Tortoise. 
Oblong-ovate, considerably depressed, with a double carina; 
posterior margin rounded, and acutely serrated ; tail the same 
