248 REPORT OF NEW JERSEY STATE MUSEUM. 
ated. Carapace when viewed laterally deepest at third vertebral 
plate and posterior descent of profile much more evenly convex 
than anterior, median keels of each vertebral plate only slightly 
jutting out. Vertebral keels rather narrow and low, their sur- 
faces smooth. Lower margin of carapace barely sloping down 
to suture of seventh and eighth marginal plates, then turning 
outward and backward to slightly descend again behind. Plates 
forming bridge of plastron, along margin, with anterior much 
deepest, and others graduated smaller behind. No axillary or 
inguinal plates. Each plate of carapace with conspicuous con- 
centric rings. Plastron a little ovoid, and its greatest width 
falls about 36 of its length, or well behind the bridge. Front 
Box Tortoise. Didicla carolina (Linneus). (Young.) 
of plastron obtuse, each side converging back with somewhat 
straight edges. Behind bridge sides of plastron more or less 
undulated convexly all around, without median notch posteriorly. 
Plates on plastron all with more or less obsoletely striated sur- 
face. Head rather large, heavy, flattened and depressed above 
and below, and scarcely swollen laterally behind each eye. Snout 
truncate in profile, rounded when viewed above, convex on sur- 
face, and its length about 24 its width. Eye large, socket about 
. 
