1. TRIONYX. QA9 
e, f. Ad., shells, India. R. McClelland, Esq. 
g. Ad., stffd. India. 
h. Yg., sttid. India. 
3. Trionyx leithii. 
Aspilus cariniferus, part., Gray, Suppl. Cat. Sh. Rept. i. p. 101 (1870). 
Trionyx leithii, Gray, Ann. § Mag. N. H. (4) x. p. 884 (1872). 
gangeticus, part., Gray, Proc. Zool. Soc. 1873, p. 47, pl. vil.* 
leithii, part., Gray, /. c. p. 49. 
Tsola leithii, Gray, Ann. § Mag. N. H. (4) xii. p. 157 (1878). 
? Trionyx gangeticus, Murray, Zool. Sind, p. 342 (1884). 
Intermediate between 7’. gangeticus and 7’. hurum. Agrees with 
the former in the width of the interorbital space, the comparatively 
short mandibular symphysis, and the markings of the head; with 
the latter in the longer and more pointed snout, the absence of a 
strong ridge on the inner alveolar surface of the mandible, and in 
the presence, in the young, of four or more dorsal ocelli, which are, 
however, smaller than in 7. hurum. 
This will probably prove to be a Western form, ranging from the 
Indus to Malabar. 
a. Her., stftd. : 
i fee. al ! Poonah. Dr. Leith [P.]. (Types.) 
e; igs, stiid. Deccan. Col. Sykes [P. ]. 
d. Yg., spir. Nelambar River, Col. Beddome [C. ]. 
Malabar. 
e. Yg., spir. India. T. C. Jerdon, Esq. [P. ]. 
ings Vcestid, India. 
h-k. Ye., spir. India. 
in. Yg., spir. India. G. E. Mason, Esq. [ P.]. 
nm. Skull & shell. India. F. Day, Esq. [ P. |. 
4, Trionyx hurum. 
Trionyx gangeticus (non Cuv.), Guérin, Icon, R. A., Rept. pl. i. fig. 6 
(1829); Lesson, in Bélang. Voy. Ind. Or., Zool. p. 297 (1834); 
Giinth. Rept. Brit, Ind. p. 47 (1864) ; Sowerby § Lear, Tort. pl. li. 
(1871). 
hurum, Gray, Syn. Rept. p. 47, pl. x. (1851), and Ill. Ind. Zool, 
ii. pl. Ixvi. (1884); Anders. Ann. § Mag. N. H. (4) ix. p. 382 
(1872); Gray, Ann. § Mag. N. H., (4) x. p. 335 (1872), and Proe. 
Zool. Soc, 1875, p. 49. 
ocellatus, Gray, Ill. Ind. Zcol. i. pl. xxviii. (1832), and Ann. 
§ Mag. N. H. (4) x. p. 887 (1872), and Proc. Zool. Soc. 1873, p. 51 ; 
Theob. Proc. As. Soc. Beng. 1875, p. 174, pl. v., and Cat. Rept. Brit. 
Ind. p. 29 (1876). 
Gymnopus duvaucelii, part., Dum. § Bibr. ii. p. 487 (1835). 
ocellatus, Dum. § Bibr. t.c. p. 489. 
Tyrse gangetica, Gray, Cat. Tort. p. 47 (1844). 
* Copy of Hardwicke’s MS. figures, made from specimens from Futtegurh. 
