64 



CATALOGUE OF SHIELD REPTILES. 



2. Emyda Ceylonensis. The Ceylon Dura. 

 Tab. XXIX. a. 



Back and upper part of the head (in spirits) dull pale 

 uniform olive-brown ; lips and lower part of the body whitish. 

 The odd anterior sternal tubercle large, oblong, transverse ; 

 the hmder callosities large, close, nearly united in the adult, 

 with straight parallel edges. , 



Emyda punctata, Kelaart, Prod. Faun. Ceylon. 179. 



Hab. Ceylon. 



a. Half-grown (in spirits). Ceylon (F. Layard, Esq.). 



b. Adult (shell only). Ceylon. From the Zoological So- 



ciety. Sent by Dr. Kelaart. 



Dr. Kelaart described this species, probably from life, as 

 " olive-green, with indistinct brown stri])es, and minutely 

 punctulated ; beneath white or fleshy-white. Head green, 

 black-striped ; lips yellow." . . . "This Water Tortoise is 

 generally distributed in the lower part of the island, and is 

 found in lakfs and tanks. Several we kept alive for 

 months in a tub filled with fresh water, fed freely on ani- 

 mal food, and also on bread and boiled rice. A large female 

 laid three eggs, globular, about an inch in diameter, with 

 a hard calcareous shell. This Tortoise too is put into wells 

 to act the part of scavenger." It is called Kivi-Ibba in 

 Cingalese. 



3. Emyda Senegalensis. The African Bungoma. 



Back, head and neck (of young) grey, with minute white 

 spots ; sternum blackish, edged with dirty white. 



Emyda Senegalensis, Gray, Cat. Tort. B.M. 47. 

 Crvptopus Senegalensis, Bum. ^' Bib. Erp. G(n. ii. 504 ; 

 'Cat. Meth. R. 23. 



Hah. "Senegal." Mus. Paris. 



Perhaps the vomig of Cydanosteus Petersii. 



2. CYCLANOSTEUS. 

 Head moderate, ovate. Margin of the dorsal disk not 

 supported by bones. Sternum broad, rounded before and 

 behind, with a moveable flap over each foot. Sternal cal- 

 losities 9, viz. four pairs, and an odd one behind the two 

 anterior pairs ; the pair on the hinder lobe small, i;ir 

 apart. 



Cydanosteus, Peters, MSS. (1848). 



? Crvptopus, sp.. Dim. ^ Bib. Erp. Gen. ii. 504. 



1. Cydanosteus Petersii. The Gambian Cyclanosteus. 

 Tab. XXIX. 



Shell broad, rounded before and behind ; sternal cal- 

 losities 9. 



Cydanosteus (Cyclanorbis) Petersii, Gray, Proc. Zool. Soc. 

 1853 ; Jnn. |- Maff. Nat. Hist. xv. 69 (1855). 



Hab. W. Africa ; Gambia. 



Osteology : — 



b. Shell only, with back margin. Gambia. Presented by 

 the Earl of Derby. 



a. Skeleton (imperfect). Gambia. Presented by the Earl 

 of Derby. From Mr. ^^^litfield's Collection. 



2. Cydanosteus frenatus. The Bridled Cyclanosteus. 



Face black-lined. 



Cyclanosteus frenatus, Peters, MSS. (1848). 

 Casi, Native of Mozambique. 



Hab. ^Mozambique (in fresh water) ; River Zambia, 

 {Peters). 



B. Sternum narrow at each end; margin of the shield 

 expanded, thin, flexible. Sternal callosities A. Tri- 

 onyciua. 



Trionyx, Gray, Syn. Rept. 



Amyda, Bonap. Tab. Analyt. 10 (1836). 



Aspidonectes, Wayler, Syst. 134 (1830). 



Fitz. Syst. Rejjt. 30. 

 Gymnopus, Dim. $ Bib. Erp. Gen. ii. 477; Cat. Meth. 



R. 22. 

 Trionyx, sp., Bell 1 



§ Head moderate ; face conical ; eyes lateral. 



3. TRIONYX. 



Head rather large, ovate, dilated behind. Muzzle rather 

 elongate, conical. Lips thick. Shield flexible on the edge. 

 Ribs 8 ■ 8. Sternum narrow at each end. Sternal callosi- 

 ties 2 or 4 ; the lateral one occupying part of both lateral 

 sternal bones. 



Trionyx, Gray, Cat. Tort. B.M. 49 (1844) ; Ann. Phil. 



X. 212 (1825). 

 Tyrse, sp.. Gray, Cat. Tort. B.M. 47 (1844). 

 Trionyx, sp., Geoff. Ann. Mus. 

 Platvpeltis, Fitz. Syst. Rept. 30. 

 Trio'uix (ferox), Flem. Phil. Zool. ii. 271. 

 Aspidonectes a, sp., Wagler, Syst. 134. 

 Aspidonectes /3, IFagler, Syst. 134. 

 Aspidonectes, Fit:. Syst. Rept. 30 (1843). 



