270 TRIONrCHIDiE. 



Ind. p. 46 (1864:) ; Blanf. Jo urn. As. Soc. Beng. xxxix. p. 343 

 (1870); Theob. Cat. Rept. Brit. Ind. p. 32 (1876); Lydekker, 

 Pal. Ind. (10) iii. p. 107, pi. xxvi. fig. 1 (188.j). 

 Emyda ceylouensis, Gray, Cat. Sh. Rept. i. p. 64, pi. xxix. A (1855) ; 

 Giint/i. I. c. p. 45 ; Gray, Suppl. Cat. Sh. Rept. i. p. 117 (1870), and 

 Ann. ^ May. N. H. (4) xi. p. 307 (1873) . 



Under this name may bo provisionally grouped such specimens 

 as agree with E. granosa except in the uniform brown colour of 

 the upper parts (with or without darker bands on the head and 

 neck) and usually in the larger entoplastral and xiphiplastral 

 callosities. The constancy of and the correlation between these 

 characters, however, still require to be tested upon a larger number 

 of specimens. 



Ceylon, India. 



a. Ad., shell. Ceylon. Dr. Kelaart. (Type of 



E. ceylonensis.) 



b, c-d. Yg., spir. Ceylon, 



e-h. Ad. & yg., spir. ? Lord Arthur Russell [P.]. 



3. Emyda scutata. 



Emyda scutata, Peters, Mon. Berl. Ac. 1868, p. 440 ; Theob. Cat. 

 Rapt. Brit. Ind. p. 32 (1870) ; Anders. An. Zool. Res. Yunnan, 

 p. 770, pis. Lxxiv., Ixxv., & Ixxv. a. figs. 12-16 (1870). 



fuscomaculata, Gray, Ann. ^ Mag. N. H. (4) xi. p. 308 (1873). 



Very closely allied to E. granosa and E. vittata, but anterior 

 marginals less enlarged, less unequal in size, the first not larger than 

 the second. Entoplastral callosity large or moderate. Brown 

 above, carapace spotted or reticulated with darker. 



Burma. 



a-d. Ad., hgr., & yg., Rangoon. M. L. Fea [C.]. 



spir. 



e. Yg., spir. Pegu. W. Theobald, Esq. [C.]. (Type 



of E. fuscomaculata.) 



f. Yg., spu-. Pegu. W. Theobald, Esq. [C.l. 



g. h. Ad. & yg., shells. Burma. W. Theobald, Esq. [P.J. 



6. CYCLANORBIS. 



Cryptopus, part., Du7n. ^- Bibr. ii. p. 400 (1835). 

 Oyclanorbis, Gray, Proc. Zool. Soc. 1852, p. 135. 

 Cyclanosteus, Gray, Proc. Zool. Soc. 185.5, p. 201, and Suppl. Cat. 



Sh. Rept. i. p. Ill (1870), and Proc. Zool. Soc. 1873, p. 70. 

 Cyclanosteus, part., Gray, Cat. Sh. Rept. i. p. 64 (1855). 

 Cycloderma, part., Strauch, Chelon. Stud. p. 55 (1802). 

 Tetrathyra, Gray, Proc. Zool. Soc. 1805, p, 323, and Suppl. Cat. Sh. 



Rept. i. p. 109, and Proc. Zool. Soc. 1873, p. 70. 

 Baikiea (non Gray, 1865), Gray, Suppl. Cat. Sh, Rept. i. p. 114, and 



Proc. Zool. Soc. 1873, p. 60. 



Nuchal not notched at the outer ends, which extend slightly 

 below the first costal plate; a pra^nuehal bone (absent in the 

 young) ; neural plates forming an incomplete series, some or all of 



