15. cycLEmys. Weil 
spots on each costal; plastron yellow with brown spots, or brown 
with the sutures between the shields yellow. Head yellowish 
brown; neck brown, with irregular yellowish streaks, the broadest 
of which extends from the posterior corner of the eye. 
Length of shell 24 centim. 
Sumatra, Borneo, Malay Peninsula, Mergui. 
a. Ad., stffd. Sumatra. (Type.) 
Oy Nierspin: Banka. Dr. Bleeker (Cistudo 
bankanensis). 
c-e. Her. & yg., spir. Sarawak. A. Everett, Esq. [C. ]. 
Is g, 2. Ad., stfid. Singapore. A. R. Wallace, Esq. | P.]. 
2, k, Hgr. & yg., shells. Singapore. A. R. Wallace, Esq. | P.]. 
2. Cyclemys dhor. 
Emys dhor, part., Gray, Syn. Rept. p. 23 (1831). 
Cyclemys orbiculata, Bell, Proc. Zool. Soc. 1834, p. 17, and Mon. 
Test. p. —, pls. xxiv., xxv. (1842); Gray, Proc, Zool. Soc. 1863, 
p- 178; Theod. Journ. Linn. Soc, x. p. 12 (1870). 
Emys dentata, Gray, Ill. Ind. Zool. ii. pl. viii. fig. 2 (1834). 
Cistudo diardii, Dum. § Libr. ii. p. 227 (1835). 
dentata, Gray, Cat. Tort. p. 32 (1844). 
saat ae Schleg. Verhand, Natuurk, Afbeeld. p. 44, figs. 6 & 7 
Cyclemys dentata, Gray, Cat. Sh. Rept. i. p. 42, pl. xix. (1855) ; 
Jerdon, Proc. As. Soc. Beng. 1870, p. 68; Theob. Cat. Rept. Brit. 
Ind. p. 8 (1876). 
Emys dhor, Strauch, Chelon. Stud. p. 28 (1862), and Verth. Schildkr. 
p- 58 (1865). 
Cyclemys oldhamii, Gray, Proc, Zool, Soc. 1863, p. 178; Giinth. 
Rept. Brit. Ind. p. 15, pl. v. fig. B (1864); Gray, Suppl. Cat. Sh. 
Rept. i. p. 23 (1870). 
ovata, Gray, Proc. Zool. Soc, 1863, p. 178, and Suppl. Cat. Sh. 
Rept. i. p. 28. 
bellii, Gray, Proc. Zool. Soc. 1865, p. 179. 
Cistudo orbiculata, Giebel, Zertschr. f. ges. Naturw. xxvii. p. 13 
1866). 
cylemys dhor, Gray, Suppl. Cat. Sh. Rept. i. p. 23. 
Carapace depressed, with a single, obtuse keel; posterior margin 
serrated ; vertebral shields as broad as long or broader than long, 
narrower than the costals. Plastron narrower than the opening of 
the shell, hind lobe angularly notched, connected with the carapace 
by a distinct bridge, the width of which is contained twice and 
three fourths to three times in the length of the plastron ; the hyo- 
and hypoplastral bones contribute to a nearly equal degree to the 
formation of the bridge; the transverse hinge between the hyo- 
and hypoplastrals, which does not correspond with the curved suture 
between the pectoral and abdominal shields, is only developed in 
adult specimens; a small inguinal shield may be present ; the suture 
between the pectoral shield and the marginals shorter than that 
between the abdominal and the marginals; the longest median 
suture is that between the pectorals. Hook of upper jaw bicuspid. 
L 
