98 ttistudinid.'f:. 



1. Bellia crassicoUis. 

 Emys crnssicollis, Gray, S\jn. R^-pt. p. lM (1831), and III. Ind. Zool. 



i.'pl. l.vxvi. %. 2 (IH.'ii'/; JJam. ^- Bihr. ii. p. .'525 (1835) ; Gray, 



Cat. Tart. p. 10 (1844;; Cantor, Cat. 3Ial. Rept. p. 3 (1847); 



Graij, Cat. Sh. Rept. \. p. 20(1855); Giinth. Rept. Brit. Ind. 



p. 28, pi. iv. fig. E (18G4). 



• spengleri, part., Srhley. Faun. Japan., Rept.y. 49 (1833). 



ni},'i"<i> I^lyt/'i Journ. As. Soc. Beng, xxiv. 1855, p. 713 (1856), 



«??rfxxxii. 1803, p. 81. 

 Clemnivs ciassicollis, Strauch, Chelon. Stud. p. 32 (18G2), and VeHh. 



Sr/iiidkr. p. GO (1865). 

 Uellia crassicoUis, Gray, Proc. Zool. Soc. 1860, p. 197, and Suppl. 



Cat. Sh. Rept. i. p. 40 (1870). 

 crassilabris, Thcoh. Cat. Rept. Brit. Ind. p. 10 (1876), 



Carapace moderately depressed, tricarinate in the j'ouiig, the 

 keels, especially the laterals, becoming indistinct in old specimens ; 

 vertebral region flattened in the adult male ; posterior boi'der 

 serrated ; nnchal small, broadest behind ; posterior side of first 



Skull of Bellia crassicoUis. (From Gray, P. Z. S. 18i>'J.) 



vertebral not half the length of the shield in the adult ; vertebrals 

 2 to 4 as long as broad or a little broader than long, much nar- 

 rower than the costals, narrowly in contact with each other in old 

 specimens ; in the latter the antero-lateral sides are convex, the 

 postero-lateral longer and concave. Plastron smaller than the 

 opening of the shell, truncate anteriorly, angularly notched pos- 

 teriorly, feebly concave in the males, strongly angulated laterally 

 in young specimens, feebly in old ones ; the width of the bridge 

 about equals the length of the hind lobe ; relative size of jJasfral 

 shields very variable ; abdominals usually forming the longest 



