56 NORTH AMERICAN BATRACHIA AND REPTILIA. 



114. J^. elegans,MVied. Above brown, more or less marked 

 with irregular lines of yellow or brownish- jellow; 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. 



115. 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. pseudogeograpJiious^ Holb. Above as in la^t, but 

 with the markings less distinct and of large hgure; 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. 



h. No spoon-shaped dilation on lower jaw. 

 IIY. M. pahistris^ Gmel. Diamond Back. Carapace 

 sometimes a plain greenish-gray, sometimes almost black, and 

 sometimes with concentric stripes; plastron varying from light 

 yellow to yellowish-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 greenish-black, edged with a paler tint; marginal scales 

 wdtli bright red markings; plastron yellowish, generally blotched. 

 Eastern region, Louisiana and Misissippi. 



119. C. reticulata., Bosc. 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 frequentl}^ obscure in adult specimens; 

 beneath yellow, sometimes with black markings. Gulf States, 



Genus Chelopus, Paf. 

 a. Edge of upper jaw straight, slightly notched in front, 

 but not produced downward. 



