126 



CHELONTA. 



shields. Nuchal shield small, widest behind ; 2nd vertebral with 

 a pointed posterior border, more or less deeply interpenetrating the 

 3rd nuchal, which is usually shorter ; sulcus between humeral and 

 pectoral shields forming a right augle. Length of adult 0,350 (13*8 

 inches). 



Hah. India. 



39841. The shell of an adult individual ; from the Pliocene of the 

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

 logia Indica,' ser. 10, vol. iii. pi. xxiv. fig. 2, as Batagur 

 durandi, of which it is the type. The 2nd vertebral shield 

 interpenetrates the 3rd to an unusual extent, and this 

 feature was regarded as a specific character, but it is more 

 probable that it is merely individual. 



Cautley Collection. Presented, 1840. 



B. Pangshurine Group. 



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

 which is pointed anteriorly, and overlies five neural bones ; neurals 

 generally short. (=Pangs7iura, Gray.) 



Pig. 29. 



Cachuga tectum. — The plastron ; reduced, ep, epiplastral bone ; ent.p, ento- 

 plastral do. ; hg.p, hyoplastral do. ; hp.p, hypoplastral do. ; x.p, xiphi- 

 plastral do. ; g, gular shield ; hum, humeral do. ; pec, pectoral do. ; ab, 

 abdominal do. ; fern, femoral do. ; an, anal do. 



