90 DR. J. E. GRAY ON THE TRIONYCHID. | Feb. 23, 
1. PeLocuetys CANTORII. (Skull, figs. 9, 10.) 
Chitra indica, Blyth, J. A. S. 1863, xl. 77; Gimther, Indian 
Rept. t. (not Gray). 
Gymnopus indicus, Cantor, Rept. Malacca, 10. 
Hab. Malacca, marine (Cantor ; Blyth). 
Dr. Giinther, who soaked Dr. Cantor’s specimen, says he observed 
some black lines on the head and throat, and some dark marbling on 
the edge of the dorsal disk as in Chitra indica. 
Fig. 9. Fig. 10. 
Pelochelys cantorii. 
2. PELOCHELYS CUMINGII. 
Chitra indica (part), Gray, Cat. Shield Rept. B.M. p. 70. 
Hab. Philippines (Cuming). 
Much larger than the preceding, which has the sternal callosities 
fully developed. 
The young specimens that Mr. Cuming brought home, apparently 
belonging to the same species, have the head olive, minutely black- 
dotted ; the throat olive, minutely white-speckled. 
3. PELOCHELYS BIBRONII?. 
Trionyx (Gymnopus) bibroni, Owen, Cat. Osteol. Spec. Mus. 
Coll. Surg. p. 185, nos. 951-959. 
Hab. ? Australia (Capt. Sir E. Home, F.R.S., fide Owen). 
This is only known from a skull, a dorsal disk, and some other 
bones in the Museum of the College of Surgeons. 
