HERPETOLOGY OF PORTO RICO. 



713 



axillars and iiiguinals large, latter largest; head moderate; snout 

 short, pointed, feebly projecting; upper jaw with a very slight median 

 notch, no cusps; jaws feebly denticulated; alveolar surface broad, 

 with a deep notch behind on the median line; symphysis of mandible 

 as broad as one-half the longest diameter of the orbit; digits connected 

 with ]>road webs. Color (in alcohol) of carapace above nearly uniform 

 tawny olive; plastron 3a^,llowish, with ol)scure dusky symmetrical 

 sinuous markings all over; top of head without markings; yellowish 

 lines narrowly edged with blackish on sides and under surface of head 

 and neck, one from the nostrils crossing the upper jaw obliquely and 

 ending abruptly at the posterior angle of the mandible, another from 



185 

 Figs. 185-186.— Psf.udemys Palustris, young. Color pattern of head; 185, underside; ISG, side. 

 11 ,-, natural size. No. 25043, U.S.N. M. 



above the nostrils, crossing the e3"e to the lower posterior edge of the 

 or])it, and thence obliquely down and backward to the corner of the 

 mouth, continuing backward under the tympanum down the side of 

 the neck; two fainter lines, one between the two just described and one 

 above the transocular line, crossing the tympaiuim; a line on the sym- 

 physis of the mandible bifurcating on the chin and a third median line 

 originating on the chin a short distance l>ehind the fork, the three 

 continuing parallel down the under side of the neck; two similar but 

 wider lines on the upper side of the fore legs and two on the under 

 side of the hind legs. 



DhnensioiiK. 



vim. 



Length of carapace 232 



Width of carapace anteriorly 150 



Width of carapace ])Osteriorly 1 70 



Height of sliell 95 



Width of anterior plastral lol)e 90 



Width of posterior plastral lol)e 93 



Width of l)ridg(> 88 



Width of head 31 



