EMYDID&. 339 
all was secured, except the right hyoplastron, a small part of the night hypoplastron, and the 
whole xiphiplastron. 
The length of the carapace was not far from 110 mm. There is a sharp keel on the nuchal. 
This is carried back on the neurals, but is obtuse until the seventh is reacht. On this, but 
especially on the eighth and on the suprapygals, it is sharp. The neurals are broad, as in the 
type. The third, not the second, is octagonal. The seventh is 6 mm. long and 12 mm. wide; 
the eighth, 6.5 mm. long and 11 mm. de: and is crost by the sulcus Benresn the fourth and 
the fifth vertebral scutes. The first suprapygal is 8 mm. long on the midline, 6 mm. wide in 
front and 10 mm. behind; and is deeply excavated behind for the second suprapygal. This 
is small, only 5 mm. long and 7 mm. wide. 
The plastron has a total length of 103 mm. The anterior lobe is 30 mm. long and 54 mm. 
wide at the base. The epiplastral lip is 24 mm. wide, acute- -edged, extends backward on the 
upper side 13 mm., and is 6 mm. thick. The upper surface is quite strongly imprest by the 
lines of growth of the horny scutes. The axillary buttresses extend but a little distance within 
the free borders of the base of the lobe. The entoplastron i is long and narrow, as in the type, 
being 22 mm. long and 18 mm. wide. The bridge is 36 mm. wide. 
The hinder lobe is 35 mm. long and 55 mm. wide at the base. In the rear there is a rather 
deep notch. The free borders are acute. On the upper side, at the hypoxiphiplastral suture, 
the horn-covered surface is 10 mm. wide. Here the 
: Width | Greatest. bones are 5 mm. thick. The inguinal buttress extends 
Vertebral. | Length. 5 
in front. | width. inward about one-third the distance from the free bor- 
7 - der of the lobe to the midline. 
: 7 a 2 The sulci are very distinct. The dimensions of the 
a ee 18 56 vertebral scutes are given in the table herewith. 
4 22+ 26 The gulars barely reach the entoplastron. The 
5 a = humero-pectoral sulcus crosses at about the middle of 
the length of the entoplastron. As in the type, the pec- 
toro-abdominal sulcus is carried back nearly to the hyohypoplastral suture. The femoro- 
abdominal sulcus crosses the lobe in a nearly straight line. The femorals measure along the 
midline, 1g mm.; the anals, 13 mm. 
This species resembles in several respects Clemmys morrisia. It differs, however, in having 
the free borders of the second and third peripherals acute, instead of obtusely rounded, and in 
having the inguinal buttresses rise well within the free border of the plastron. The epiplastral 
lip resembles in form closely that of C. morrisie, and it is markt on its upper surface with 
similar ridges, though not so strongly developt. 
Echmatemys? latilabiata (Cope). 
Emys latilabiatus, Corr, Proc. Amer. Philos. Soc., x11, 1872, p. 471; Sixth Ann. Report U.S. Geol. 
Surv., 1872 (1873), pp. 625, 626; Vert. Tert. Form. West, 1884, p. 138. 
Emys latilabrata, Hay, Bibliog. and Cat. Foss. Vert. N. A., 1902, p. 448. 
The present species has never been hgured. In his work on the Vertebrata of the Tertiary 
Formations of the West, cited above, Professor Cope stated that the type had been mislaid. 
So far as the present writer knows, it has not been recovered up to the present time. It 1s 
possible that at some time another specimen may be discovered that can be identihed by 
means of the description. The striking characters of the species, so far as indicated by Cope’s 
description, are the relatively great bread of the shell and the wide epiplastral lip. The 
following is Cope’s latest description: 
Represented by a perfect specimen of a tortoise of a broadly oval form, and somewhat terrestrial 
habit. Its prominent characters are to be seen in the plastron, of which the posterior lobe is deeply 
bifurcate. The anterior lobe is peculiar 1 in the unusual width of the lip- like projection of the clavic- 
ular (“episternal”) bone, which is twice as wide as in E. wyomingensts, and not prominent. Bones 
all smooth; margins of lobes of plastron thickened. 
There are three scars, perhaps, of muscular insertions near the posterior margin of the plastron, 
an oval one opposite to each lobe, and a round one opposite to the notch. 
As compared with E. septarta this species has no such septa nor sculpture; the emargination of 
the plastron is more open, and the lip much shorter and wider, 
