Atty 
1872.] 47 é [Cope. 
NoToMORPHA GARMAN. Cope. spec. nova. 
Represented by numerous fragments from a bluff, six miles north of the 
Bear River. There are numerous bones of the carapace and plastron. A 
characteristic piece is the episternal bone. It displays marked difference 
from the same element in the type of the genus, in lacking the acute edge 
and internal thickening. The margin is obtusely rounded and the suture 
with the hyosternal is convave. The anterior margin is truncate. The 
dermal sutural grooves are well marked. There is a large intergular 
seutum, which evidently encroached considerably on the mesosternal (a 
piece not preserved) and probably subtriangular in shape. The gulars 
are reduced to triangular areas on the outer anterior angles, the suture, 
with the humeral, being in front of the middle point between the angle 
and the hyosternal suture. The margin is less distinctly emarginate at 
this suture than in JV. testudinea. 
The marginal bones belong to both bridge and free edge. They are 
all much thickened medially, but with thin proximal sutural margins. 
The free ones are well recurved, and with regular, rather thickened 
margins. The bridge marginals have very obtuse margins. Their 
general massiveness is in contrast to the thinness of the costals of which 
there are numerous fragments. Portions of vertebral bones are inter- 
mediate in thickness. There is no thickening or ridge on each side of the 
vertebral scuta. The seutal grooves are everywhere well marked. The 
surface of the marginals and episternal is obsoletely rugose, somewhat as 
in some species of Taphrosphys, from the Cretaceous. 
This species was about the size of V. gravis, and differs from it in the 
episternal bone, etc. 
Measurements. M. 
Length of.episternal (approximate)... ................ 0.04 
ce from posterior suture do. to gular scute....... .02 
"Phickness episvermal, WEMING. wet in ss as oie oes c O11 
Length, Of ¢, marginal DONG. 6e0 6s suki since: .. 042 
Width of same “ Se ee ie lew s cosas 045 
Thickness ** — ‘* ne ea tunes ee ae ce Sees O15 
Width of a bridge-marginal....... oan Cinis i ge One 
SUIGinOss OF AeVOLLOUrale io. Gece t ial sss sea 007 
This species is dedicated to my assistant and friend, Prof. Saml. W. 
yarman, of Chicago, whose eye detected the fragments which teach its 
character. 
Ata future time it is hoped that a fuller account of the fauna of this 
lake basin, now enclosed between the Eastern and Western ranges of the 
Wahsatch Mountains, may be given. 
