82 
BUNOTHERIA. 
that the Palceoleniur is the Adapis of Cuvier, and that Aphelotherium, Glerv., 
and Coenopithecus are also syndnyms of it. And they are disposed to 
accede to the conclusion of Delfortrie as to its affinities. Subsequently, M. 
Filliol established for this genus, and a new one which he called Necrolemur, 
a family, the PachylemuridcB, adding a new species. Adapts magnusA In 
this paper, he recognizes the characters pointed out by previous authors, as 
allying this family to the Lemurida, as well as the higher dental formula 
which distinguishes it, and adds some important characters, which are 
strongly marked in the genus Adapis. He finds the cranium to be strongly 
contracted just behind the orbits and at the pterygoid plates, in a manner 
unknown to existing Lemuridce. 
Subsequent to the above dates, the number of known species of these 
puzzling Eocene Mammalia has been increasing, and tlie Wheeler expedi¬ 
tion of 1874 added a number of genera and species to those previously 
known. An account of these will be found in the following pages. 
I have seen no reason to modify the view originally expressed as to 
the Quadrumanous affinities of Awaptomorjj/iMS, but new light has been 
thrown on the structure of Tomitherium and its allies. The fragments of 
skeletons of two species of this genus (T. jarrovii and T. tutuni) include 
numerous bones of the tarsus, and these are identical with corresponding 
parts in the Creodonta, and different from those of the Lemuridm. The 
astragalus extends anterior to the shortened calcaneum, and the navicular is 
short and the cuboid not elongate. The superior aspect of the first presents 
two oblique surfaces, one for the internal malleolus, the other for the trans¬ 
verse facet of the tibia. The portions of femur including the third trochanter, 
the proximal part of the ulna, and the distal portion of the humerus are all 
closely similar to those of the Creodonta. The type specimen of Tomitherium 
includes some parts of the skeleton not present in the New Mexican species. 
Thus the ilium of T. rostratum, while furnished with the prominent anterior in¬ 
ferior spine of the Creodonta, is flattened tow'ard the crest, and is not angulate 
on the external face. The femur is furnished with a ver}^ elevated third tro¬ 
chanter, which is opposite to the little trrchanter, as in Chiromys and Talpa, 
*Aun. Sc. G6o]., t. iv, :So. iv, p. 18, pi. vii, viii, 1874, aud Journal de Zoologie, iv, 
p. 404. 
