2, STAUROTYPUS. 31 
Fig. 10. 
Shell of Stawrotypus salvinit. 
1. Staurotypus triporcatus. 
Terrapene triporcata, Wiegm., Isis, 1828, p. 364. 
Staurotypus triporeatus, Wagl. Syst. Amph. pl. v. figs. 44, 45 (1830), 
and Icon. Amph. pl. xxxiii. (1853) ; Dum. § Bibr. ii. p. 5386 (1835) ; 
Gray, Cat. Sh. Rept. i. p. 47, pl. xx b. (1855) ; Bocourt, Miss. Sc. 
Mex., Rept. p. 21 (1870). 
Kinosternon triporeatum, Gray, Cat. Tort. p. 34 (1844). 
Anterior lobe of plastron broad, with the longitudinal borders 
straight or slightly concave ; bridge comparatively broad, its diameter 
about four times and a half in the length of the plastron. No gular 
shield ; the suture between the pectorals is the longest; the suture 
between the latter shields and the abdominals strongly sinuous ; 
the greatest length of the abdominal shields equals their width ; 
inframarginals longer than broad. 
Length of carapace 34 centim. 
Mexico, Guatemala. 
a. o, stfid, Vera Cruz, M. Sallé [C.]. 
