120 THE AMERICAN MUSEUM JOURNAL 
b. LimMBS AND FEET WELL DEVELOPED; FEET 
WEBBED. Ascuen &; Ste ert ee ee caee POND AND MARSH 
TURTLES. 
ba. Carapace smooth. 
1. Plastron hinged to close against 
the carapace. 
Dark brown; a yellow stripe 
on each side of the head....Musk Turtle (Aromo- 
chelys odoratus). 
Dark brown; head speckled.Mud Turtle (K7inoster- 
non pennsylvanicum). 
2. Plastron rigid. 
Black or olive above; lower 
edge of carapace brightly 
marked with red; plastron 
WellOw Alea gc ee oe ere Painted Turtle (Chry- 
semys picta). 
Carapace black with numer- 
ous yellow spots; plastron 
black, blotched with yel- 
LOW te. 3) Birch ae oe eRe Spotted Turtle (Chelo- 
pus guttatus). 
Carapace black or brown, the 
-shields showing  hghter 
borders; head black; a 
briluant yellow patch on 
each side behind the eye..Muhlenberg’s Turtle 
(Chelopus muhlenber- 
git). 
bb. Carapace showing raised, angular 
lobes. 
Plates of carapace concen- 
trically ringed; ight brown 
above, limbs, neck and 
fleshy parts salmon red...Wood Turtle (Chelopus 
insculptus). 
Plates of carapace with nu- 
merous concentric rings; 
color, olive above, head 
