20. TESTIJDO. 140 



fecWy hookod ; a pair of larjjo pr:i}fronfcal shields, followed 1)y a 

 smalltT frontal ; limbs with unc'(|Ual-sizeil scales, wliich are mostly 

 subcircular ami juxtaposed ; no cularij:ed femoral tubercles. Dorsal 

 shields reddish brown, yellowish green in the centre; plastron 

 yellowish with reddish-l)rown spots. 



Length of shell Ki.L centim. 



Medina, Upper Senegal. 



20. TESTUDO. 



Tostudo, part., Linn. S. N. i. p. :{.■'>() (170G). 



Testudo, Dum. Zool. Anal p. 77 (1806); Wdr/ler, Si/sf. Amph. 



p. 138(18:]0); Dxm. Hf Blhr. ii. p. 85 (18:]'>)"; Gnu}, Cat. Tort. 



p. 4 (1844), awl S/i. Ih-pt. i. p. 4 (I800); Straarh, i'licloii. Sfu>/. 



p. 20 (IS&2); Giinth. Rept. lirit. Lid. p. 8 (18(54); Gray, Suppl. 



Cut. S/i. Jic'pt. i. p. 4 (1870); Anders. Zool. lies. Yunnan, p. 705 



(1870). 

 Chersiue, part., Merrcm, Tent. p. 20 (1820). 

 Cbersina, Gray, Si/n. liept. p. 14 (1831), and Cat. Tort. p. 11, and 



Sh. R'pt. i. p. 12; St ranch, I. c. p. 22; Gray, Suppl. p. 13, and 



Proc. Zool. Soc. 1873, p. 720. 

 Chersus, fVayl. I. c. p, 138. 



Geochelone, 'Fitzliig. Ann. Wim. Mus. i. p. Ill (1835), 

 CjHiidraspis, Fitzing. I. c. p. 112. 

 Cheloiioidis, Fitzing. I. c. ; Agassiz, Contr. Nat. Hist. U. S. i. p. 448 



(1857) ; Gray, Proc. Zool. Soc. 1873, p. 724. 

 Chersobius, Fitzing. I. c. 

 Psammobates, Fitzing. I. c. 

 Mauouria, Gray, Proc. Zool. Soc. 1852, p. 133, and Cat. Sh. Rept. 



i. p. 15; St ranch, I. c. p. 24; Giinth. I.e. p. 10; Gray, Suppl. 



p. 15, and Proc. Zool. Soc. 1873, p. 725. 

 Teleopus, Leconte, Proc. Ac. Phi/ad. 1854, p. 187. 

 Xerobates, Agass. I. c. p. 446 ; Gray, Proc. Zool. Soc. 1873, p. 723. 

 Megalochelys, Agaxs. 1. c. p. 448 ; Gray, I. c. p. 724. 

 Scapia, Gray, Proc. Zool. Soc. 1869, p. 167, and Supply. Q, and Proc. 



Zool. Soc. 1873, p. 725. 

 Pel tastes, Gray, II. cc. pp. 171, 8, 725. 



Chersinella, Gray, Suppl. p. 8, and Proc. Zool. Soc, 1873, p. 725. 

 Testudinella, Gray, II. cc. pp. 12, 726. 

 Goplier, Gray, Proc. Zool. Soc. 1870, p. 706. 

 Peltonia, Gray, App. Cat. Sh. Rept. p. 4 (1872). 

 Ceutrocbelys, Gray, I. c. p. 5, and Proc. Zool. Soc. 1873, p. 725. 

 Elepbantopus, Gray, Proc. Zool. Soc. 1873, p, 724. 

 Asterochelys, Gray, I. c. 



Neural plates usually alternately tetragonal and octagonal, 

 sometimes mostly hexagonal and short-sided behind ; costal 

 plates alternately narrower and wider. Suture between the mar- 

 ginal and costal bones and shields usually corresponding ; supra- 

 caudal shield usually single. Plastron extensively united to the 

 carapace by suture, with short axillary and inguinal buttresses, 

 which do Jiot reach, or just reach, the costal plates ; entoplastron 

 usually anterior to the humero-pectoral suture. Skull with weak 

 or modcratelj' wide po.storbital and temporal arches ; alveolar surface 

 of upper jaw with one or two median ridges ; choance between the 



m2 



