TESTUDINIDZ. 
carapace about 25 mm. Its anterior extremity is broad and rounded. The distance between 
the points where the gular sulci cross the free border is 117 mm. The greatest thickness of the 
lobe, at the base of the lip, is 30 mm. There is a slight excavation at the base of the lip on the 
upper surtace. The edges of the anterior lobe are subacute. 
The posterior lobe has a length of 120 mm. and a width of 215 mm. at the base. The 
thickness of the border of the hypoplastron just behind the inguinal notch is 37 mm.; whereas 
in S. conspecta it is only 23 mm. The notch in the rear of this lobe has a depth of 25 mm. 
a ae | | 
ee ‘ : 
ate ell \ 
‘ Fas - fi ane Sia Ss p | 
i | ) | 
f 
i 5 ~“ 4 2 | 
; Pd | 
eee | | 
pl raen oe a LS 
- { é \ | Z 7 
: aie a ae | 
' S [ 
poe caine ~~ i Z ee < - | 
a] { = | | 
498. | 
> iN 490. 
a OT 
raat 
—— 
ees 
\ 
t 
om 
| 
{ 
~—, 
} dee 
\ 
J 
~ 
\ 
i 
Fics. 498 AND 499.—Stylemys capax. Carapace and plastron of type. +. No. 1357 A. M.N.H. 
498. Carapace. 499. Plastron. 
The form and proportions of the scutes, upper and lower, do not differ in any important 
way from those of S. conspecta. ‘The humero-pectoral sulcus falls at a considerable distance 
behind the border of the entoplastron, but this may be only an individual peculiarity. 
This species is remarkable for the thickness of the peripheral and plastral bones and for 
the obtuseness of the free borders of the anterior and posterior peripherals. The width also is 
proportionately greater than that of S. cons pecta, being only a little less than 80 per cent. of the 
length of the carapace. 
Stylemys conspecta sp. nov. 
\ Plate 64, figs. 1, 2; text-figs. 500, Sor. 
1884, p. 769. 
Stylemys nebrascensis, in part, Copr, Vert. Tert. Form. West., 
The type of this species is a large and fine shell which belongs to the Cope collection and 
is now in the American Museum, bearing the number 1358. It was collected in 1878, by Mr. 
Charles H. Sternberg, and appears to have been found near the junction of North Fork and 
South Fork of the John Day River, in Grant County, Oregon. Its level is supposed to be the 
middle beds of the John Day formation, the Wicemehedim beds of Marsh. 
