AMPHIBIANS AND REPTILES. 235 
Creek. They have also been observed in this locality by Messrs. 
Witmer Stone and David McCadden. 
Emys rubriventris Harlan, Med. Phys. Res., 1835, p. 154.— 
Holbrook, N. Am. Herp., II, 1838, p. 38, Pl. 6.—Holbrook, |. c., 
Bobo), 1642) mack Pl. 6. 
Pseudemys rubriventris Stone, Am Nat., XL, 1906, p. 169. 
Ptychemys rugosa Agassiz, Contrib. Nat. Hist. U. S., I, 1857, 
Pp. 431. 
Patychemys rugosa Abbott, Geol. N. J., 1868, p. 799. 
Pseudemys rugosa Abbott, Nat. Rambles, 1885, p. 475. 
Emys serrata Say, Journ. Acad. Nat. Sci. Phila., IV, pt. 2, 
1825, pp. 204, 208 (ref. infers).—Harlan, Journ. Acad. Nat. 
Sci. Phila., VI, pt. 1, 1829, p. 28.—Harlan, Med, Phys. Res., 
POsS pia a (rch, iikers) 
Genus CHRYSEMys Gray. 
The Painted Turtles. 
Chrysemys picta (Schneider). 
PLATE 64. 
Painted Terrapin. Painted Turtle. Yellow Belly. Yellow 
Bellied Terrapin. Chequered Terrapin. 
Carapace rather elongately ovoid as seen from above, and 
margin entire save for a few slight irregular gashes on anterior 
median edge and slight median notch posteriorly. Greatest 
width of carapace about last */,) of its length or opposite front 
of fourth vertebral plate. When viewed laterally greatest depth 
of carapace about summit of second vertebral plate, and its mar- 
gin slopes gradually down to front of eighth marginal plate, then 
slightly up to tenth and slightly down finally to posterior por- 
tion of eleventh. No median vertebral keel, and surface of 
carapace evenly convex. Anterior surface of carapace a little 
more steeply convex than posterior, though latter a little more 
concave at postero-lateral regions than at antero-lateral. Plates 
forming bridge a trifle longer than broad, and their upper edges 
