568 TESTUDO OWENIL. 
The abdominal scute, in the smaller specimen, joins the sixth and seventh mar- 
einal and the inguinal scutes, and in the larger specimen, the latter and the sixth 
and fifth marginal scutes. 
ADMEASUREMENTS.—TWO SPECIMENS. 
SMALLER, LARGER. 
Inches. Lines. Inches, Lines, 
Estimated length of sternum, . ; : 7 
Breadth, ; ; ; ‘ 4 v 5 6 
Height, 2 1h 
TESTUDO OWENI.  Leidy. 
(Tab. xii. a, figs. 3, 4.) 
Emys Oweni: Pr. Ac. Nat. Sci., vol. v., 827. 
Testudo Oweni: ib., vol. vi., p. 59. 
This species is established upon a nearly entire carapace and plastron. The 
former is more convex than in the Gophir, and posterior to the fifth vertebral plate 
is more retuse. 
The costal plates in the individual were vi united by cartilage to the marginal 
plates. The latter at the sides are vertically convex; anteriorly and posteriorly 
less shelving than the dorsum generally; and above the axillary and inguinal 
notches slightly reflected. 
The sternum is flat except at the union with the carapace, where it is convex, 
and anteriorly is turned upwards. 
In the specimen there are ten vertebral plates. The first is one and a half inches 
long and ten lines broad. Those succeeding to the eighth inclusive are hexahedral 
and articulate each with two pairs of costal plates. 
The tenth vertebral plate is fourteen lines long and seventeen broad. 
The nuchal plate comes in contact only at the anterior angle of the first costal 
scute, and measures three and three-quarter inches in breadth, equal to the first 
vertebral scute. 
The second and third vertebral scutes are nearly equal in size, each being about 
two inches seven lines broad, and the former two inches long, and the latter one 
line greater. The lateral margins are parallel and bow-shaped. The fourth ver- 
tebral scute is slightly broader than long, and the lateral margins are bow-shaped 
and convergent posteriorly from their middle. 
The entosternal plate is pyriform with the anterior extremity bordering the 
margin of the gular scutes, and the base extending to the humeral scutes. It is 
twenty-eight lines in length and breadth. 
The hyosternals are three and a half inches long, and articulate with the third to 
the angle inclusive of the sixth marginal plates 
The hyposternals are two and a half inches Joog at their middle, and articulate 
with the sixth and seventh marginal plates. 
