26 NEW-YORK FAUNA. 
num bivalve, of twelve plates, full and rounded in front, deeply emarginate behind, and when 
closed entirely conceal the animal. Head moderate. Nostrils anterior, contiguous. Hyes 
large, prominent. Upper jaw broad, with its cutting edge sharp, and deeply emarginate in 
front. Lower jaw with a small hook. Neck long, and slightly contracted behind the head. 
Fore legs robust, with imbricated scales in front, and smaller ones behind. Toes palmated, 
with five short curved claws. Hind legs covered with small scales and granulations, and fur- 
nished with five palmated toes, the posterior clawless. 
Color. Shell jet black, marked with numerous oblong and round yellow spots. Sternum 
dusky yellow; each plate with a large quadrangular dark blotch at its outer posterior angle. 
Head black, with oblong yellow spots. Lower jaw and chin bright yellow. Throat yellow, 
but clouded with dusky. Fore legs olive yellow in front; dusky, with yellow spots behind. 
Hind legs dusky above, and soiled yellowish behind. Tail black above, with two obscure 
yellowish lines ; dusky beneath. 
Length of shell, 7°0-8°0. 
This species, which has been hitherto doubtless taken for a mere variety of the C. carolina, 
was first accurately described and figured by Dr. Holbrook in the work cited above. It was 
obtained by him from the prairies of Illinois and Wisconsin, and for some time this was the 
only locality. More recently it has been detected by Dr. Storer as far north as Haverhill, 
New-Hampshire, in 44° north latitude. It ranges unquestionably through all the northern 
and middle States; and hence, although not yet actually observed, must necessarily be 
included in our list of the Reptiles of New-York. 
(EXTRA-LIMITAL.) 
Genus Testupo, Brongniart. Shell solid. Sternum solid, immovable. Extremities short, thick and 
clavate. ‘Toes short, and closely connected as far as the nails. 
T. carolina. (Hoxisroox, Herp. pl. 1.) Shell very convex, depressed above; the last two marginal 
plates united; scapular plates projecting forward in a spade-like process. Tail very short. Length 
12inches. Georgia, Florida. 
