1884.] The Condylarthra. 
first, shortest; it is not very short, and is quite slender. Sesa- 
moid bones are probably present. The posterior foot is that of a 
plantigrade animal (Fig. 8). The astragalus is much like that of 
the Proboscidea in form (Fig. 8 4). The head is moderately long 
and is depressed. Its distal extremity is regularly convex from 
side to side. The trochlea is horizontal, and is not grooved medi- 
ally, but is very slightly concave. Fibular face vertical; malleo- 
`~ 
iss 
ewer anna eo e= sn, 
ca Sn ee 
a =; 
be 
pr 
ma 
-onnere™ 
6 nde 8, ex n figs. 
7 . 6, two-thirds nat. size. Fig. æ, T right humerus, kt iph- 
ot umite eri w; a’, do., distal view. Fig. 4, left s external 
A , internal erig of proximal end h another left scapula. aas e Puerco 
New Mexico. Original, from Report U. S. Geol. Survey 0 ydy Vol. 111. 
oe slightly oblique, and occupied by a deep central fossa. 
is not as convex as in Phenacodus, but is more recurved 
on both si 
799 . 
