730 EEPTILIxi. 



plates, and narromng the inguinal end of the visceral section of the shell. Skull 

 with the jugal and quadrato-jugal bones strongly developed ; a broad and long 

 alveolar plate to the upper jaw, with one or more ridges, and with its outer margin 

 denticulated ; posterior nares somewhat constricted and deep ; palate narrow, con- 

 cave; palatine foramina minute; pterygoid region not broad, constricted at the 

 middle, nearly flat. Membrane bones in the eye. Teet with five toes anteriorly and 

 posteriorly, only four in the hind foot appearing externally beyond the skin ; claws 

 4-4 or 5-4. Toes broadly webbed. One or two sigmoid flexures to the large intes- 

 tine. Cloacal bladders. Two processes of the lung free in the visceral cavity. Eggs 

 oval. Males generallv smaller than females, and with the caudal vertebrae elongated. 



Bataguh tkivittata, Dum. & Bib. Plates LXII & LXIII. 



Emya trivittata, D. & B., Erpet. Genl., vol. ii, 1835, p. 851 ; Cantor, Journ. As. See, Bengal, vol. 



XV, 1847, p. 610; Dumeril, Cat. Method, des Kept., 1851, p. 14; Gray, Cat. Tort., &c., B.M., 



1844, p. 17. 

 Batagur trivittata, Theobald, Journ. Linn. Soe., vol. x, 1858, p. 14 ( S only) ; id., Journ. As. Soc, 



ex. No., vol. xxxviii, p. 13, 1868 (S only). 

 Batagur dhougoka, Blyth, Journ. As. Soc, Bengal, vol. xxxii, p. 84, 1863, /)flw. 

 Clemmys dhon.goJca, Straueh, Vertheil. Sehildkr., p. 88, 1865,_^;«r«. 

 Kacliuga pegiwnsis. Gray, Proe. Zool. Soe., 1869, p. 201, fig. 12 (skull) ; id., Suppl. Cat. Shd. Kept., 



1870, p. 55, fig. 20 ; Theobald, Proc. Zool. Soc., 1870, p. 676. 

 Kachuga trillneata, Gray, Append. Cat. Sh. Kept., p. 18, 1873, jdrw*. 

 Batagur trivittata, Theobald, Descr. Cat. Kept., B. Ind., 1876, p. 21 (J only). 



I have personally examined the types of E. trivittata in the Paris Museum, 

 which are stated to have been obtained by Reynaud, who was the Surgeon attached 

 to the Expedition of the Chem-ette to the East Indies. The males which I have here 

 described, and of which I procured three from the Irawady and one from Bhamd, 

 agree exactly with the types in the Paris Museum, so that there can be no doubt 

 of the specific identity of these males with I], trivittata. There is a difficulty, 

 however, regarding the supposed females. 



Dr. Gray' described a species of fresh-water tortoise from a skull said to have 

 been procured in India, and assigned to it the name of Kachuga trilineata, 

 Theobald, which was evidently a misprint for trivittata, the name under which 

 Theobald' had described the male and female of this species. On the same occasion 

 Dr. Gray described another skull to which the habitat of India was assigned, under 

 the inappropriate name of K. pegiwnsis, if India were the proper habitat of the 

 animal. 



In 1870, Mr. Theobald^ pointed out that he had never described a fresh- 

 water tortoise under the name of JB. trilineata, and had never taken to England 

 the skull of a three-streaked Batagur from India, although he had taken to London 



' Proc. Zool. Soc, Lond., 1869, p. 200. 

 - Journ. Linn. Soc, vol. x, 1868, p. 14. 

 ' Proc. Zool. Soc, 1870, p. 676. 



