SOME OF PROFESSOR MARSH’S CRITICISMS. 291 
**(3) The orbit is not below these horns but quite behind them, 
and has over it a prominent ridge on the frontal.” ` In Loxolopho- 
don cornutus the naso-maxillary horn is largely above the orbit, 
and there is no superciliary ridge of the frontal. 
“ (4) The occiput is not vertical, but extends obliquely back- 
ward, the occipital crest projecting behind the condyles.” Prof. 
Marsh has been perhaps led into this error by the imperfection of 
the occipital condyles in his specimen. He does not appear to 
know that in life the head was directed obliquely downwards, so _ 
that the occipital crest was vertical as I described it in Loxolopho- 
don and in Uintatherium robustum. 
“ (5) The temporal fossa is not small posteriorly but unusually 
sendy ;’ and “‘(7) the spine of the tibia is not obtuse but want- 
ing,” are frivolous ; vide my descriptions, l. c. 
“ (6) The great trochanter of the femur is recurved, though 
Prof. Cope says not.” It is flat, as in the elephants. 
**(8) One of the species named by Prof. Cope, Eobasileus fur- 
catus, is based on what he regards as portions of the nasal bones. 
The description, however, indicates that these specimens are 
merely the posterior horn-cores of well-known species.” In the 
location of these cores Prof. Marsh may be correct, but demon- 
stration is yet wanting. How ‘‘ well-known” these species are 
to Prof. Marsh, will be evident shortly; and how they could be 
well-known to anybody else, may be determined by reference to 
his brief notices of a few of them published to the date of his 
writing. 
Omitting notice of sundry insignificant questions raised in a 
postscript to-the paper, as well as those which are more or less 
repetitions of criticisms already made, I pass to his denial of the 
possession of a proboscis to these animals. I retain my belief 
that they had such an organ, and refer to my essay above cited 
for the proofs. Leidy has suspected its presence in Megaceratops. 
He then says “(7th) the malar bone does not form the middle 
element of the zygomatic arch, but the anterior as in the tapir.” 
It forms the middle element in Loxolophodon, as may be seen 
from my figures. Below, its maxillary support forms one-third of 
the zygoma, at the side a little less, and above, a narrow lamina 
of the malar extends nearly to the lachrymal. 
“(9) The nasal bones are not deeply eikeneased at their ex- 
tremities.” They are excavated, etc., as I have described. 
