108 



CBELONTA. 



Bellia theobaldi, Lydekker 1 . 



Syn. Clemmys theobaldi, Lydekker 2 . 



Clemmys punjabiensis y Lydekker 3 . 



Distinguished from the preceding by the urn-shaped 1st vertebral 

 shield, which is relatively broad posteriorly. Clemmys punjabiensis 

 is founded on a female shell. 



Hab. India (Punjab). 



R. 1515. Cast of the imperfect shell of an adult male. The original, 

 -which is the type, was obtained from the Pliocene Siwaliks 

 of the Punjab, and is preserved in the Indian Museum, 

 Calcutta. It is figured by the writer in the ' Palaeonto- 

 logia Indica/ ser. 10, vol. iii. pi. xx. figs. 2, 2a, 2b; the 

 female shell being represented in figs. 3, 3a, 36 of the 

 same plate. Made in the Museum, 1889. 



Genus O CADI A, Gray 4 . 



Neural bones of moderate length, hexagonal, with their antero- 

 lateral surfaces much shorter than the postero-lateral. Plastron 

 extensively united to the carapace by suture, with strong axillary 

 and inguinal buttresses extending on to the costals ; sulcus between 

 humeral and pectoral shields either cutting or placed immediately 

 behind the entoplastral bone ; xiphiplastrals notched. A nuchal 

 shield is always present, and the vertebrals are hexagonal and 

 comparatively narrow, with a peculiar projection on the middle 

 of the anterior border. The pectoral shield is not greatly shorter 

 than the abdominal. The 2nd suprapygal bone approximates in 

 contour to a truncated cone. 



The undermentioned Chelonians appear inseparable from Ocadia, 

 now known only by a single species from China, in which the 

 humero-pectoral sulcus always cuts the entoplastral bone. In 

 Clemmys the neural bones are still shorter than in Ocadia, and the 

 vertebral shields have not the forward projection. 



1 ' Palscontologia Indica ' (Mem. Geol. Surv. Ind.), ser. 10, vol. iii. p. 173 

 (1885).— Clemmys. 



2 Loc. cit. 8 Ibid. p. 175. 



4 Suppl. Cat. Shield Reptiles, pt. i. p. 35 (1870). See Boulenger, 'Cat, of 

 Chelonia,' &c. p. 85, fig. 24 (1889). 



