I20 THE AMERICAN MUSEUM JOURNAL 



b. Limbs AND FEET WELL developed; feet 



WEBBED POND AND MARSH 



TURTLES. 



ba. Carapace smooth. 

 I. Plastron hinged to close against 

 the carapace. 



Dark brown ; a yellow stripe 



on each side of the head . . . .Musk Turtle (.4 romo- 



chelys odoratus). 

 Dark brown; head speckled. Mud Turtle (Kinoster- 



non pennsylvanicum) . 



2. Plastron rigid. 



Black or olive above; lower 

 edge of carapace brightly 

 marked with red ; plastron 



3-ellow Painted Turtle {Chry- 



scDiys picta). 



Carapace black with numer- 

 ous yellow spots ; plastron 

 black, blotched with yel- 

 low Spotted Turtle {Clielo- 



piis guttatus). 



Carapace black or brown, the 

 shields showing lighter 

 borders; head black; a 

 brilliant yellow patch on 



each side behind the eye. .Muhlenberg's Turtle 



{Chelopns miihlenbcr- 

 gii). 



bb. Carapace showing raised, angular 

 lobes. 



Plates of carapace concen- 

 trically ringed ; light brown 

 above, limbs, neck and 



fleshy parts salmon red . . . Wood Turtle (Chelopus 



insculpHis) . 



Plates of carapace with nu- 

 merous concentric rings ; 

 color, olive above, head 



