88 TESTUDINID ®. 
8. MALACOCLEMMYS. 
nas part., Dum. Zool. Anal. p. 76 (1806) ; Dum. § Bibr. ii. p. 232 
(1835). 
Clemmys, part., Wagler, Syst. Amph. p. 136 (1830); Strauch, Chelon. 
Stud. p. 28 (1862). 
Terrapene (non Merr.), part., Bonap. Osserv. s. sec, Ed. d. R. A. 
p. 153 (1830). 
Malaclemys, Gray, Cat. Tort. p. 28 (1844), and Sh. Rept. i. p. 37 
(1855), and Suppl. p. 41 (1870). 
Graptemys, Agassiz, Contr. N. H. U.S. i. p. 486 (1827); Gray, 
Suppl. Cat. Sh. Rept. i. p. 45. 
Malacoclemmys, Agassiz, 1. c. p. 437. 
Neural plates hexagonal, short-sided in front. Plastron exten- 
sively united to the carapace by suture, with feeble axillary and 
inguinal peduncles, the latter anchylosed to the fifth costal plate ; 
entoplastron anterior to the humero-pectoral suture. Skull with a 
Fig. 25. 
Skull of Malacoclemmys terrapen. (From Gray, P.Z.8. 1869.) 
bony temporal arch; alveolar surface very broad, without median 
ridge ; choanz behind the level of the eyes. Upper surface of head 
covered with undivided skin. Digits webbed. ‘Tail short. 
North America. 
