254 



TRIONYCniBJS. 



Aspilu3 cariniferus, Graif, Proc. Zool. Soc. 18G4, p. 83, figs., and Stqipl. 

 Cat. Sh. liept. i. p. 101 (1870). 



? punctulatus, Graj/, 11. cc. pp. 84, 102. 



? oruatus, Gray, 11. cc. pp. bo, 103. 



Ida ornata, Gray, Proc. Zool. Soc. 1873, p. 55, figs. 



Aspilus javanicus, Gray, I. c. p. G7, fig. 



Trionyx epbippium, Theoh. Proc. As. Sue. Beng. 1875, p. 177, pi. v. 



Costal plates eight pairs, the last well developed and forming a 

 median suture behind the last neural ; a single neural between the 

 first pair of costals ; dorsal plates coarsely pitted and vcrmiculate. 

 Dorsal skin of young with longitudinal ridges of small tubercles. 

 Epiplastra in contact, or narrowly separated, in front of the ento- 

 plastron, which forms an obtuse or a right angle ; plastral callo- 

 sities well developed in the adult, hyo-hypoplastral and xiphi- 

 plastral, and coarsely sculptured like the carapace. Head mode- 

 rate ; snout (on the skull) considerably longer than the diameter of 

 the orbit ; interorbital region, in the adult, as broad as or a little 

 narrower than the nasal fossa ; jjostorbital arch very narrow, one 

 third or one fourth the diameter of the orbit ; mandible with a 

 strong ridge along the symphysis, the diameter of which equals or 

 exceeds the diameter of the orbit. Olive-brown above and on the 

 chin ; head and chin with numerous yellow spots, the largest of 

 which are below the temple ; dorsal disk of young light-dotted, and 

 usually with a few large blackish spots ; lower parts white. 



Size of T. liurum. 



Pegu, Tenasserim, Siam, Camboja, Malay Peninsula, Sumatra, 

 Borneo, Java. 



W. Theobald, Esq. [P.]. 

 W. Theobald, Esq. [P.]. 

 (Type of T. epltippium^ 

 M. Mouhot [C.]. 

 M. Mouhot [C.]. 

 M. Mouhot. (Types of 



T. ornatns.^ 

 Dr. Cantor. 

 A. R. Wallace, Esq. [C.]. 



L. D. Dillwyn, Esq. [P.]. 



Madame IdaPfeiffer [C.]. 



Leyden Museum. (Type 

 of T. cariniferus.) 



8. Trionyx triimguis. 



Testudo triunguis, ForsJcal, Descr. Anivi. p. ix (1775). 

 Trionyx asgyptiacus, Geoffr. Ann. Mus. xiv. p. 12, pis. i. & ii. 

 (1800), and Descr. Egypte.i. p. llo, pi. i. (1809) ; Strauc/t, Chclon. 



