136 
MESODONTA. 
small. The ilium is rather narrow and flat, except at the acetabulum, where 
it supports a large anterior inferior spine. 
Associated with the teeth of the T. jarrovii and T. tutum were found - 
the bones of the skeletons of two animals, corresponding in size to 
those represented by the teeth. They have the same nearly white color, 
which is unusual in fossils from this fonuation, and are in every respect 
similar to the portions of jaws supporting the teeth. I suspect that they 
belong to the same animals, and describe them under those heads 
respectively. The reason why I avoid positive assertion is the fact that 
I did not discover these pieces myself, but they were brought to me by 
one of my guides, who stated that he discovered them together. 
The characters displayed by these bones are closely similar to those 
exhibited by the Creodonta. The humerus of the T. rostratum from 
Wyoming is also of the same type, resembling, as I originally pointed out, 
that of the Carnivorous genus Nasua. The distal part of the humerus 
described under T. jarrovii is of the same form. Most of the parts of the 
New Mexican specimens, however, are wanting from the Wyoming 
specimen, and consist chiefly of bones of tlie hind foot. They display the 
calcaneum broad and short in front, compressed and produced behind. 
The astragalus has the oblique inner side for the malleolus, and the less 
oblique flat surface for the tibia. The cuboid is longer than Avide, with one 
extremity convex, and the navicular is very short. The metatarsals are 
moderately elongate only, and the phalanges not slender, resembling those 
of the Carnivora. The only diversity I observe between corresponding 
parts of T. jarrovii and T. rostratum is that in the femur of the former the 
third trochanter occupies its usual position, Avhile in the latter, it is opposite 
the little trochanter. As the bones described under T. jarrovii are less 
certainly parts of that animal than are those known to be parts of T. tutum 
which are described under it, I defer using this character to substantiate 
the genus Felt/codus, Avhich I originally proposed for the reception of these 
species. 
I oi’iginally described this genus as Lemurine, with added characters 
of the plantigrade Carnivora. The position is confirmed by my discovery 
of their resemblance to the Creodonta, the Eocene representatives of the 
