1. KACHtTQA. 51 



Carapace without hinge ; front loho of plastron movable. 



18. Pyxis, p. 144. 



Carapace and plastron without hinge. 



19. Homopus, ji. 145. 



B. Alveolar surface of upper jaw with a mediau ridge. 



20. Teatudo, p. 149. 



1. KACHUGA. 



Emys, part., Gray, Syn. Rept. p. 20 (1831); Dum. ^- Bihr. ii. p. 232 



(1835) ; Gray, Cat. Tort. p. 14 (1844). 

 Batagur, part., Gray, Cat. Sh. Rept. i. p. 35 (1855) ; Giinth. Rept. 



Brit. 1)1(1. p. 37 (1864) ; AmJer.^. Zool. Res. Yunnan, p. 729 (1879). 

 Clemmys, part., Sf.rauch, Chelon. Stud. p. 28 (1862). 

 Kachuga, part., Gray, Cat. Sh. Rept. i. p. 35. 

 Pangshura, Gray, I. c. p. 36 ; Giinth. I. c. p. 33 ; Gray, Suppl. Cat. 



Sh.Rept. i. p. 60(1870). 

 Batagurella, Gray, Proc. Zool. Soc. 1869, p. 200. 

 Dongoka, part., Gray, I. c. p. 202. 

 Kachuga, Gray, Suppl. Cat. Sh. Rept. i. p. 54. 

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

 Cucboa, Gray, I. c. p. 61. 

 Jerdonella, Gray, I. c. 

 Emia, Gray, I. c. 



Fourth vertebral shield elongate, embracing four or five neural 

 plates; neural plates hexagonal, short-sided in front. Plastron 

 extensively united to the carapace by suture, with extremely deve- 

 loped axillary and inguinal buttresses, the former connected with 

 or nearly reaching the first rib, the latter anchylosed between the 

 fifth and sixth costal plates ; entoplastron anterior to the humero- 

 pectoral suture. Skull with a bony temporal arch ; alveolar surfaces 

 very broad, of upper jaw with a median ridge; edge of jaws denti- 

 culated ; choanee on a level with the posterior border of the eyes, or 

 behind. Upper surface of head covered with undivided skin. 

 Digits very broadly webbed. Tail very short, not longer in the 

 young than in the adult. 



India and Burma. 



Synopsis of the Species, 



I. Third vertebral shield forming a broad suture with the fourth, 

 which embraces four neural plates ; neural plates much 

 lon2;er than broad. 



A. Second vertebral shield with straight transverse posterior 

 border ; suture between humerals and pectorals convex or 

 forming an obtuse angle. 



Alveolar surface of upper jaw extremely 

 broad, the median ridge nearer the 



