40 TESTUDINID^!. 



b. Third vertebral shield pentagonal, pointed be- 

 hind, 

 a'. Second vertebral shield much shorter than 



third, embracing two neural plates. 

 a". Posterior margin of carapace strongly ser- 

 rated ; 26 marginal shields (including 



caudals) K. sylhetensis, p. 42. 



b". Posterior margin not serrated K. intermedia, p. 43. 



b'. Second vertebral shield as long as broad, 



embracing three neural plates K. tectum, p. 43. 



36. Kachuga lineata. 



Emys dhor, part., Gray, Syn. Kept, p. 20. 



Emys dentata, part, Gray, Syn. Rept. errata, & pis. via, ix ; id. III. 



Ind. Zool. ii, pi. Iviii, fig. 1. 

 Emys lineata, Gray, Syn. Rept. p. 23. 

 Einvs kachuga, Gray, III. Ind. Zool. i, pi. Ixxiv. 

 Batagur lineata, Gray, Cat. Sh. Rept. i, p. 35, pi. xvii ; Gilnth. Rept. 



B. I. p. 39. 

 Batagur ellioti, Gray, P. Z. S. 1862, p. 264 ; Gilnth. Rept. B. 1. 



p. 40, pi. iii, figs. A, A'. 



Kachuga hardwickii, Gray, P. Z. S. 1869, p. 202. 

 ? Kachuga fusca, Gray, Suppl. Cat. Sh. Rept. i, p. 56. 

 Kachuga liueata, Gray, Suppl. Cat. Sh. Rept. i, p. 56 ; Boideng. Cat. 



Chel. Sfc. p. 54. 

 Batagur kachuga, Theob. Cat. p. 19. 



Carapace of young strongly keeled, the keels tubercular poste- 

 riorly on the second and third vertebral shields, posterior margin 

 strongly crenulated ; the marginal serrature disappears in adoles- 

 cent specimens, and the vertebral keel, after being reduced to a 

 series of low knobs, vanishes entirely in the full-grown, the cara- 

 pace of which is very convex. Nuchal shield small, trapezoid, 

 broadest posteriorly ; 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 angulate 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 between the 

 abdominals, the shortest 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 large, axillary smaller. Head 

 moderate ; snout obtuse, moderately prominent ; jaws with denti- 

 culated edge, upper not notched mesially ; alveolar surfaces very 

 broad, the median ridge of the upper jaw being somewhat nearer 

 the outer than the inner margin ; choanse behind the line of the 

 posterior borders of the orbits ; the width of the lower jaw at the 

 symphysis equals the diameter of the orbit. Limbs with trans- 



