304 General Notes. [ April, 
Green River beds, although they are abundant in the formations 
deposited before and after that period. Until its proper position 
can be ascertained, I propose that the formation be called the 
Manti beds.—£. D. Cope. 
THE SKULL oF EmpepocLes —This genus, originally described? 
from vertebrz, proves to be allied to Diadectes, and to be one of 
the most remarkable forms of the Permian fauna. With that 
genus it forms a family, the sasea The skull of Æ. molaris? 
displays the following charac 
The relations of the ae and zygomatic enbi are as in 
the Zheromorpha generally. The pterygoids extend to the quad- 
rates, and the vomer bears teeth. The brain-case extends to be- 
tween the orbits, and its lateral walls are uninterrupted by Sae 
from this point to near the origin of the os guadratum. There 
an enormous frontoparietal foramen. The mode of eps 
with the atlas is peculiar. There is a facet on each side of the 
foramen magnum, which then expands largely below them. The 
bone which bounds it- inferiorly, presents on its posterior edge a 
median concavity. On each side of this, is a transverse cotylus, 
much like those of an atlas which are applied to the occipital 
condyles of the Mammalia. They occupy precisely the position 
of the Mammalian condyles. The median point of their upper 
border, which forms the floor of the foramen magnum, is pro- 
duced in the position occupied by the median occipital condyle of 
a reptile. From its position between the cotyli, the section of 
this process is triangular. The element in which the cotyli are 
excavated has the form of the mammalian basioccipital, and of 
the reptilian sphenoid. It is not the batrachian parasphenoid. 
Its extreme external border on each side where it joins a crest 
descending from Sar os is excavated by a circular fossa 
which looks outw 
The character of this articulation is so distinct from anything 
yet known among vertebrated animals, that I feel justified in pro- 
posing a new division of the Theromorpha to include the Dia- 
dec tide, to be called the Cotylosaurta. 
It will be Dee cates that in Diadectes the maxillary teeth are 
transverse, and molar-like. ere is a distinct canine. In Æm- 
pedocles there is no distinct canine, but the incisors are distin- 
guished by their form, having more or less distinct’ transverse 
edges. For the present I refer D. latibuccatus to Empedocles— 
ED Cope. 
GEOGRAPHY AND TRAVELS.’ 
THE INTERIOR OF GREENLAND.—The Danish Government hav- 
ing recently instituted an examination by a scientific commission 
of the interior of Greenland, has now published the first part of 
oceed. Amer. Philos. Soc., Phila., 1878, p. 
516 
+ Datt molaris Cope, AMER. NATURALIST, 1878, p. 565. 
3 Edited by ELLIS H. YARNALL, Philadelphia. 
