54 TESTUDINID^. 



B. Tliird vertebral shield pentagonal, pointed behind; neural 

 plates not or but slightly longer than broad. 



1. Second vertebral shield much shorter than third, embracing 



two neural plates. 



Posterior margin of carapace strongly ser- 

 rated ; 20 marginal shields (including 

 caudals) 5. sylhetensis, p. 57. 



Posterior margin not serrated 6. intermedia, p. 58. 



2. Second vertebral shield as long as 



broad, embracing three neural 



plates 7. tectum, p. 58. 



1. Kachuga lineata. 



Emys dhor, part., Gray, Spi. Itept. p. 20 (1831). 



dentata, part., Gray, I. c. errata, & pis. viii., ix., and III. Ind. 



Zool. ii. pi. iviii. tig. 1 "(1834). 

 lineata. Gray, I. c. p. 23 ; Dum. ^- Bihr. ii. p. 33o (1835) ; 



Gray, Cat. Tori. p. 1(5 (1844). 



kachuga. Gray, III. Ind. Zool. i. pi. ixxiv. (1832). 



Uatagur lineata, Gray, Cat. Sh. Rcpt. i. p. 35, pi. xvii. (1855); 



Gi'mth. Rept. Brit. Ind. p. .39 (1864) ; Anders. Zool. Res. Yunnan, 



p. 745 (1879). 



dbongoka. Gray, I. c. pi. xxxvi. (skull). 



ellioti. Gray, Froc. Zool. Soc. 1802, p. 264 ; Gunth. I. r. p. 40, 



pi. iii. tig. A. 

 Clemiuvs lineata, Strauck, Chelon. Stud. p. 33 (1862). 



ellioti, Strauch, Verth. Schildkr. p. 88 (1805). 



Kachuga hardwickii. Gray, Froc. Zool. Soc. 1809, p. 202. 

 ? Kaclniga fusca. Gray, Siq)pl. Cat. Sh. Rept. i. p. 56 (1870). 

 Kachuga lineata. Gray, I, c. 



dentata. Gray, I. c. 



Dhongoka hardwickii, part., Gray, I. c. p. 57. 



Batagur kachuga, Thcoh. Cat. Rept. Brit. Ind. p. 19 (1870). 



bakeri, Lydekher, Fal. Ind. (10) iii. p. 190, pi. xxiv. tig. 5 (1885). 



Carapace of young strongly keeled, the keels tubercular poste- 

 rioi'ly on the second and third vertebral shields, posterior margin 

 strongly crenulated ; the marginal serrature disappears in adolescent 

 specimens, and the vertebral keel, alter being reduced to a series of 

 low knobs, vanishes entirely in the fullgrown, the carapace of which 

 is very convex. Nuchal shield small, trapezoid, broadest poste- 

 riorly ; first vertebral as broad in front as behind, or broader ; 

 second vertebral longer than third, with which it forms a straight 

 transverse suture ; fourth longest and forming a broad suture with 

 the third ; second vertebral broader than long in the young, as long 

 as broad in the adult. Plastron angulatcd laterally in the young; 

 anterior and posterior lobes rather narrow and shorter than the 

 width of the bridge, truncate anteriorly, openly notched posteriorly ; 

 the longest median suture is between the abdominals, the sliortest 

 between the gulars, which equals about one half that between the 

 humerals ; the suture between gulars and humerals forms an obtuse 

 angle, and so does that between humerals and pectorals ; inguinal 



