216 REPORT OF NEW JERSEY STATE MUSEUM. 
a double series of tubercles, a pair to each plate, and these situated 
mostly at their posterior portions. Along each of lateral plates 
a single series of tubercles. Entire upper surface of carapace 
more or less entirely with bony tubercles. Posterior marginal 
plates more or less striate. In profile carapace highest at second 
vertebral plate, and posterior to this point margin below a more 
gradual even convex curve up posteriorly than anteriorly. Mar- 
ginal plates below all more or less smooth. A very small axillary 
plate. Plastron cruciform without narrow bridges, ovoid in 
shape with bulge anterior and posterior, and convergence de- 
cidedly narrower. First pair of gular plates small and apical, 
brachial triangular, and broad thoracic largest. Abdominals 
triangular, and subcaudals elongate to form an isoceles triangle. 
Plates on plastron all smooth and without striz. Head very 
large, flattened above and broad behind, appearing rather nar- 
rowly triangular as seen from above. Snout pointed and short. 
Eye large, high, prominent and near end of snout. Mouth in- 
ferior, with upper jaw projecting well beyond lower, and with 
a notch on each side in front. Mandible fitting within upper 
jaw and hooked well in front. Mouth as viewed below with 
width about 114 in its length. Head and neck distensible for 
a space about equal to 34 length of carapace, latter thick, and 
covered both above and below with warty or tuberculated skin, 
forming a fold on retracted head. Legs, feet and tail covered 
with similar skin, more or less tuberculated posteriorly, and trans- 
verse rows of large scales both above and below on latter. Some 
large scales on outer front, or wrist, of fore limbs. Fore limbs 
large, robust, and each of 5 fingers with a slender curved claw. 
Hind limbs equally strong, and well developed, and 5 toes with 
similar claws. ‘Tail long and slender, ending in a narrow pointed 
tip, and with a median series of wedge-shaped keels along its 
dorsal surface, decreasing in size posteriorly. On each side of 
tail a series of tubercles above, and another below, similarly de- 
creasing backwards. Behind vent about 4 of plates bifid as in 
some snakes. Color in alcohol dusky-brown above. Limbs and 
tail all more or less dusky-gray, paler or more grayish below, 
and each finely specked or obscurely spotted with grayish-white. 
