242 VERTEBRATE ANIMALS OF THE UNITED STATES 



and yellow; length of carapace 150 mm.: entire Pacific slope, in ponds 

 and rivers; common. 



C. muhlenhergi (Schoepfi")(Fig. 132). Carapace with fine concentric 

 lines on the plates in young adults, and dark brown or black in color, 

 with yellowish or reddish markings; head black, with a large orange 

 or yellow spot on each side; length of carapace 100 mm.; width 65 

 mm.: New Jersey and southeastern Pennsylvania to Rhode Island 

 and central New York; mountains of western North Carolina; in 

 marshes and ponds and small streams ; often common. 



2. Emys Dumeril. Shell moderately high, with narrow bridges, 

 plastron notched behind, movable and joined with the carapace by 

 a hgament on each side; a transverse hinge in front of the bridges 

 divides the plastron into 2 lobes, both of which are movable, although 

 the shell cannot be completely closed ; digits webbed : i species. 





Fig. 133. — Emys blandingi {from Fowler). 



E. blandingi (Holbrook) (Fig. 133). Carapace black, with numer- 

 ous small yellow spots; plastron yellow in the center, with large irregular 

 black blotches along the two sides; length of carapace 200 mm.; width 

 120 mm.: north-central States and New England; westward to Minne- 

 sota; riot common. 



3. Terrapene Merrem {Cistndo Fleming), Box-turtles. Shell high 

 and very convex; plastron large, united with the carapace by a ligament 

 on each side, rounded at both ends, and with a transverse hinge which 

 divides it into two movable lobes so that the shell can be completely 

 closed; upper jaw with a beak; digits with a small web or with none: 

 3 species. 



