56 
NORTH AMERICAN BATRACHIA AND REPTILIA. 
114. P. elegans , Wied. Above brown, more or less marked 
with irregular lines of yellow or brownish-yellow; below yellow, 
with dark blotches; head and neck dusky, with bright red or 
yellowish lines on sides and beneath; carapace smooth and flat. 
Central region; Texan district; Southern Illinois . 
Genus Malacoclemys, Gray. 
a. A spoon-shaped dilation at extremity of lower jaw. 
JL15. M. geographicus , Les. Map Turtle. Above olive- 
brown, with paler streaks and intersecting lines, which are espec- 
ially distinct on neck, legs, and edge of carapace; plastron yel- 
lowish; carapace sometimes well keeled; the vertebral row of 
scales not imbricated. Mississippi Yalley, Pennsylvania, and 
New York. 
116. M. pseudo geographicus, Holb. Above as in last, but 
with the markings less distinct and of large figure; yellow stripes 
on head, neck, and legs; plastron yellow, with black or reddish- 
brown markings; carapace keeled; vertebral row of scales more 
or less imbricated by a black projection on their posterior border. 
Mississippi Yalley to Wisconsin and Northern Ohio. 
b. No spoon-shaped dilation on lower jaw. 
117. M. palustris , Gmel. Diamond Back. Carapace 
sometimes a plain greenish-gray, sometimes almost black, and 
sometimes with concentric stripes; plastron varying from light 
yellow to vellowish-green or reddish-brown; plain or dotted, or 
concentrically striped; shell smooth or with concentric grooves. 
Coast from New York to Texas. 
Genus Chrysemys, Gray. 
118. C. picta , Herm. Painted Turtle. Body rather flat; 
bridge connecting carapace and plastron wide but flat; scales of 
carapace greenisli-black, edged with a paler tint; marginal scales 
with bright red markings; plastron yellowish, generally blotched. 
Eastern region, Louisiana and Misissippi. 
119. G. reticulata , Bose. Southern Painted Turtle. Body 
moderately high and elongated; bridge high and wide; plastron 
somewhat narrow; above dusky or dark brown, reticulate with 
yellow lines, which are frequently obscure in adult specimens; 
beneath yellow, sometimes with black markings. Gulf States. 
Genus Chelopus, Raf. 
a. Edge of upper jaw straight, slightly notched in front, 
but not produced downward. 
