240 REPORT OF NEW JERSEY STATE MUSEUM. 
Clemmys muhlenbergii (Schcepff). 
PLATE 65. 
Muhlenberg’s Turtle. Muhlenberg’s Terrapin. Mud Turtle. 
Carapace broadly ovoid, and as viewed above with greatest 
width about last third of its length, or about opposite suture 
of third and fourth vertebral plates. Margin of carapace entire 
save for slight notches at sutures, and in front scarcely indented 
medianly. When viewed laterally greatest depth of carapace 
about summit of third vertebral plate, and posterior descent of 
profile a little more evenly convex than anterior, which slopes 
down more gradually forwards. Median vertebral keel obsolete. 
Posterior surface of carapace sloping down a trifle more steeply 
than anterior, and marginal plates all more or less expanding 
out, those at bridge as usual most steep. Edge of carapace seen 
in profile sloping down gradually behind to margin of eighth 
plate, after which it is very slightly concave, and then a trifle 
convex. ‘Two median plates forming bridge deeper than long, 
and their uppermost edges forming a slight ridge which is also 
continued both in front, and behind some distance. Inguinal 
and axillary plates rather large, and inconspicuous under edge 
of carapace. Plates of carapace all with concentric angulated 
striz. Plastron elongately ovoid, its greatest width about 1*/, 
in its length and falling about last fourth or opposite femoral 
plates. Both anterior and posterior edges of plastron with a 
median broad emargination. Edges of plastron scarcely notched 
at sutures of plates. Gular plates rather large, and both together 
form a triangle. Humeral plates a little smaller than thoracic, 
which are nearly as large as abdominals. Femoral and anal 
very broad and large. Plates on plastron with pronounced 
strie. Head and neck rather small and short, former rather 
elongate, depressed, and with broad upper surface rather evenly 
convex. Posteriorly head but little swollen. Snout short, 
obtuse, front surface bevelled inferiorly, and when viewed above 
seen to be twice as long as broad. Eye large, rather high, and 
comprising last 34 in space between tip of snout and ,rictus. 
