2. MACROCLEMMYS. 



25 



1. Macroclemmys temminckii. 



Chelonurca temminckii (Troosf), Ifolbr. I. c. p. 147, pi. xxiv. 

 Eraysam'iis temminckii, A. Dum. Cat. Mefh. liept. p. IG (18-j1). 

 Macroclemys temminckii, Gray, Cat. Sh. Rept. i. p. 49, pis. xxxviii. 



fig. 2, xxxix., k^' xl. fig. 1. 

 Macrochelys temminckii, Gray, Proc. Zool. Soc. 1855, p. 200, and 



Suppl. Cat. Sh. Rept. i. p. G4. 

 Gypochelys lacertina. Aijassiz, I. o. p. 414, pi. v. figs. 23-27. 

 Macroclemmys temminckii, Strauch, I. c. p. 134. 

 Macrochelys lacertina. Cope, Proc. Ac. Philad. 1872, p. 23. 



Carapace strongly tricarinato. Vertebral shields much broader 

 than long, at least three fourths the width of the costals. Width 



Fig. G. 



Shell of Macroclemmys temminckii. 



of the bridge one seventh to one ninth of the length of the plastron ; 

 the hypoplastra take a rather greater share in the formation of the 

 bridge than the hyoplastra. Plastral shields subject to great varia- 

 tion ; the arrangement in the three specimens in the Museum is 

 shown by the following figures (fig. 7). Fig. h affords good support 

 to the view that the shield covering the bridge is the displaced 

 abdominal ; it also offers the striking example of an intergular, 

 placed as in Chelodina ; fig. c shows a pair of intergulars, as in the 

 fossil genus Ba'enrx. 



