124 CHELONIA. 



lateral surfaces ; 4th vertebral shield elongated, and extending over 

 4 or 5 neural bones. Plastron extensively united with the carapace 

 by suture, with extremely long buttresses, which extend very far 

 up on the costals, and almost reach the neurals, the inguinal but- 

 tress being wedged in between the 5th and 6th costals; sulcus 

 between humeral and pectoral shields placed far behind the ento- 

 plastral bone (figs. 28, 29) ; xiphiplastrals notched. 



With the exception of the 3rd, the vertebral shields are compa- 

 ratively long, and all are more or less hexagonal The oral surfaces 

 of the maxillae have a median ridge, and the cutting-edges of the 

 jaws are serrated. 



A. Typical Group. 



Third vertebral shield having a broad junction with the 4th, 

 which overlies four neural bones ; neurals elongated (fig. 28). 



Carijuga lincata, Gray \ 



Syn. Emys lineata, Gray 2 . 



Batagur lineata, Gray 3 . 

 Batagur kachuga, Theobald 4 . 

 Batagur bakeri, Lydekker 5 . 



The type species. Carapace of adult vaulted and smooth, but 

 carinated in young. Nuchal shield small, widest behind; 2nd 

 vertebral longer than 3rd, with which it forms a straight junction ; 

 sulcus between humeral and pectoral shields convex or forming an 

 obtuse angle. Length of carapace 0,370 (14*6 inches). 



Hob. India and Burma. 



39835a. The adult shell, imperfect posteriorly; from the Pliocene 

 {Fig.) of the Siwalik Hills. Figured by the- writer in the 

 ' Palseontologia Indica,' ser. 10, vol. iii. pi. xxiii. figs. 1, 

 1 a, and pi. xxiv. fig. 5, as Batagur bakeri, of which it is 

 the type. Subsequent observations tend to show that this 

 specimen is not specifically separable from the existing 

 form. Cautley Collection. Presented, 1840. 



R. 891. An imperfect immature shell ; from the Siwalik Hills. The 

 carapace does not show the position of the posterior border 



1 Synopsis Reptiliuin, p. 23 (1831). — Emys. 2 Loc. cit. 



3 Catalogue of Shield Eep tiles, pt. i. p. 35 (1855). 



4 Catalogue of the Reptiles of British India, p. 19 (1876). 



5 Pakeontologia Indica (Mem. Geol. Surv. Ind.), ser. 10, vol. iii. p. 1 ( <X) 

 (1885). 



