PAL.EOSYOPS LEIDY, AND ITS ALLIES. 
335 
Femur, No. 10,847. — The femur of P. minor has the same length as that of 
the Tapir, its shaft, however, differs from the latter in being broader and heavier. 
The specimen under consideration has the great trochanter broken off, but from the 
basal portion I conclude it was probably of the same form as tliat of P. paludosus. 
The head of the femur is perfectly cylindrical. The neck is not well marked off' 
from the shaft. The trochanteric fossa is flattened and deep. The anterior surface 
of the shaft below the head is strongly raised and terminates posteriorly in a rounded 
surface; upon this surface and just above the trochlear is a well marked fossa. This 
is present in the recent Tapir but is only slightly marked in the femur of P. palu- 
dos7is. The lesser trochanter has about the same position on the shaft as that of 
the Tapir, although it is moi’e prominent and longer than in the latter form. The 
surface of the shaft at the third trochanter is very broad compared with the length of 
the femur. The third trochanter is longer hut not as prominent as that of the 
Tapir’s femur ; its distal portion is broad and strongly rugose. The distal extremity 
of the femur is broader in front and does not expand so much behind as in that of 
the Tapir; nor is the antero-posterior diameter as great as in the latter form. The 
trochlear surface is placed more underneath than in the latter and its surface is 
broad and short with the internal rim longer than the external. The inter- 
condylar fossa is rather short and not as deep as in the larger species. The posterior 
face of the shaft is flattened and broader than that of the Tapir, and like that of P. 
paludos7is it shows no fossa for the flexor perforatus muscle. 
Tibia, No. 10,357. — The length and diameter of the shaft of the tibia coin- 
cides very chjsely with that of the 'hapir. The proximal portion has its facets hori- 
zontally placed, whereas in the Tapir these facets are oblique to one another. The 
upper part of the tibial tuberosity is subdivided and the crest extends farther down 
on the shaft than in the tibia of the Tajiir. The external notch for the extensor 
tendon is wanting, as in the tibia of P. paludosus. The distal trochlear surface is 
narrower than in the Tapir ; its external process is oblique instead of being cut off 
squarely as in the latter genus. The jjosterior trochlear tuberosity is rather long, 
slender and more medially placed than in the Tapir. The external trochlear border 
is not deeply excavated and shows a straight facet for the fibula. The superior 
flbular facet is also well developed in this species. 
Fibula, No. 10,352. — There is a fibula in the collection whose proportions cor- 
respond closely to those of the above tibia, Imt it was not associated with it. I 
shall, however, provisionally refer it to P. minor. This fibula is rather longer 
and stouter than that of the Tapir; its proximal portion is broad and flattened. 
Superiorly it shows a long and narrow facet for the tibia ; its distal end is rather 
broad and heavy, and is bordered before and behind by a rather prominent styloid 
process. The astragalar facet is concave and shows an elongated lateral fiicet 
for the tibia. The articular extremity resembles more closely in form that of the 
Rhinoceros than that of the Tapir. 
The Tarsiis, (PI. XIY, fig. 43.) — The tarsal bones ai'e represented in the collec- 
tion by a nunfljer of specimens, among them being a very finely preserved astragalus 
