28 



APPENDIX TO THE CATALOGUE OF SHIELD REPTILES. 



• the animal the appearance of the skin of a porpoise 

 or dolphin. The under Burface is covered with a similar 

 skin, but of a pure white colour, the white on the under- 

 side of the margin forming a narrow edge to the dorsal 

 disk ; the underside is equally smooth with the back, e\< lepl 



>ver the callosities, which are tuberoulated in concentric 

 circles. The skin between the odd hone in the margin 

 and- the front of the bony dorsal disk is concentrically 

 wrinkled. The head is rather large, olive or blackish, with 

 pale splits on the upper part of the sides. Tho nose pro- 

 duced, black ; nostrils flesh-coloured, small, circular, sepa- 

 rated by a broad septum, and with a small internal lobe on 

 the outer side of each. Eyes lateral ; pupil small, black ; 

 iris greyish, without any spot on the sides ; the lower eye- 

 lid larger, thin, pellucid, whitish. The hinder part of the 

 tore feet very broad and expanded, lobulated on the edge, 

 and folded together when contracted, with the three claws 

 on the front part of the foot. The front of the sternum 

 and its flaps as broad and of the same shape as the dorsal 

 disk: the hinder part of the sternum broad; the lateral 

 daps large and separated from the hinder soft part of the 

 sternum by a deep notch on each side. 



•• This animal is interesting as being intermediate in form 

 between the usual flat-backed Mud-Tortoises and the very 

 convex Emydce of the Indian tanks, which have a series of 

 marginal bones in the margin of their cartilaginous dorsal 

 shield."— Gray, P.Z.S. 1870, pp. 717, 71S. 



Emyda ceylonensis (p. 117), add : — 

 Gray, Tortoises <$"e. tab. 55 & 56 (from spirits). 



Caretta imbricata (p. 119), add: — 

 Gray, Tortoises $c. tab. 57 it 58 (from life). 



Mydas viridis (p. 119), add: — 

 Gray, Tortoises $c. tab. 59 & GO (from life). 



What are : — 



1. Chelonia squamosa, Girard, Explor. Exped. p. 442. 

 • C. squamata, Ayassiz, Contrib. i. p. 382. 



Uab. Indian Ocean. 



2. Chelonia rostrata, Girard, Explor. Exped. p. 446. 

 Ilab. Pacific Ocean. 



3. Chelonia formosa, Girard, Explor. Exped. p. 456. 

 Hah. Pacific Ocean. 



4. Chelonia tenuis, Girard, Explor. Exped. p. 459. 

 Ilab. Pacific Ocean. 



Euchelts, Girard (not Gray). 



5. Chelonia macropus, Walb. Strauch, Chelon. Stud. p. 01. 

 Euchelys macropus, Girard, Explor. Exped. p. 448. 



Ilab. Pacific Ocean. 



See also : — 



Chelonia Hoffmanni, Gray, Syn. Rept. p. 54, 1831. 



La Tortue de Maestricht, Winkler, Tort. Foss. p. 9, tab. 



i.-xiv. & xxiii. fig. 95. 

 Chelonia Faujasii, Giebel, Fauna der Vorwelt, i. p. 72. 



Winkler, Tort. Foss. p. 64. 

 Chelonia cretacea, Kcferstein, Naturgescli. ii. p. 253. 



Hob. Fossil in the chalk of Maestricht. 



M. Schlegel in the ' Comptes Piendus,' 1854, p. 799, com- 

 pares this species with rlphargis ; but M. Winkler on a 

 careful comparison has decided that it is a true Chelonia 

 (I. c. p. 63), and he considers C. Faujasii the same species 

 (p. 69). 



THE END. 



