140 TESTUDINIDZ. 
2. Chaibassia theobaldi. 
Chaibassia tricarinata, part., Theod. l. c. 
theobaldi, Anders. l. ¢. p. 718. 
Distinguished from the preceding by the very much larger and 
anteriorly broader first vertebral, the lateral margins of which are 
widely anteriorly divergent. Facial portion of the head longer and 
more pointed. Shell black above, almost orange-yellow inferiorly, 
the dorsal ridges bright yellow; head black, with a broad reddish 
band from above each nostril, increasing in breadth as it passes 
over the eye and over the tympanum, where it ceases; a narrow 
similar band below the angle of the mouth, along the inferior 
margin of the lower jaw ; neck and limbs blackish. 
Length of shell 16 centim. 
Bisthnath Plain, Assam. 
17. CINIXYS. 
Kinixys, Bell, Tr. Linn. Soc. xv. p. 398 (1827); Wagl. Syst. Amph. 
p. 188 (1850); Gray, Syn. Rept. p. 15 (1831); Dum. §& Bibr. ii. 
p- 159 (1885); Gray, Cat. Tort. p. 11 (1844), and Sh. Rept. i. 
p. 12 (1855); Strauch, Chelon. Stud. p. 24 (1862). 
Cinothorax, Litzing. Ann. Wien. Mus. i. p. 108 (1885). 
Posterior portion of carapace movable in the adult, hinged between 
the seventh and eighth marginals and the fourth and fifth costal plates. 
Neural plates hexagonal, short-sided behind. Supracaudal shield 
undivided. Plastron extensively united to the carapace by suture, 
with short axillary and inguinal buttresses, which do not reach the 
costal plates ; entoplastron anterior to the humero-pectoral suture. 
Skull with a bony temporal arch; alveolar surface without median 
ridge; beak hooked; choanze between the eyes. Head shielded 
above. Limbs club-shaped, with blunt claws and large scales. 
Tail short, not longer in the young than in the adult. 
Tropical Africa. 
Synopsis of the Species. 
J. Anterior and posterior margins of carapace reverted and dentated, 
No nuchal shield; anterior extremity of 
plastron projecting beyond the carapace ; 
posterior part of carapace sloping ...... 1. erosa, p. 141. 
Nuchal present ; anterior extremity of plastron 
not projecting beyond the carapace; cara- 
pace descending vertically behind ...... 2. homeana, p. 143. 
IJ. Margin of carapace not reverted nor den- 
tated ; nuchal shield present.......... 3, belliana, p. 148. 
