HOLLAND AND PETERSON: OSTEOLOGY OF THE CHALICOTHEROIDEA. onl 
of the phalanges, the distal end of the metapodials, the lower end of the humerus, 
and the length of the ischium are the most noticeable. The head is that of a Peris- 
sodactyl combining various features represented in the horse, the rhinoceros, and 
the tapir, as has been already pointed out in the foregoing pages. The neck is 
perhaps most like that of the horse, though heavier. The thorax and the lumbar 
region are suggestive of the Rhinoceroses in general appearance, while the dorso- 
lumbar region, in the number of its vertebrae, is more like T%tanotherium. The 
hind limbs are especially like those in the latter genus, except that the pelvis is 
much longer. The scapula is also very large and in this respect suggests 7%tano- 
thervum, but it is onthe whole more like that of the Rhinoceroses in its general 
outlines. The humerus has a curiously primitive appearance, the distal end being 
especially suggestive of the conditions met with in early Tertiary forms (Phenacodus, 
ete.). The ulna-radius is highly modified, much elongated, and often coéssified 
throughout. The carpus is completely diplarthrous, while the tarsus is nearly 
so (the distal face of the astragalus articulating with the navicular only). The 
upper ends of the metapodials are of the ungulate pattern, while distally they 
present the anomaly of being more nearly like those of a carnivore, in order to 
conform to the curiously modified phalanges. The body is heavy as are the limbs 
and the feet, especially the fore feet, while the head is rather small in proportion. 
In Moropus the fore limb is longer than the hind limb, but not to the same degree 
as appears to be the case in Macrotherium grande according to illustrations given 
by different authors. 
As has been stated in an earlier publication (J. c., p. 742) the vertebral column 
as well as the ribs, and the fore limbs and feet represent but one individual. The 
hind limbs and feet were found a short distance from where the main portion of 
the skeleton was discovered (see Fig. 2) and are associated with the skeleton 
under a separate number (No. 1706). This association is established because the 
pelvis and hind limb appear to agree with the rest of the skeleton and it is altogether 
probable that they pertain to the same individual. 
The restoration of the skeleton shown in the plates has been most skilfully 
effected by Mr. 8. Agostini under the supervision of Mr. Peterson. 
MEASUREMENTS OF THE MOUNTED SKELETON. 
Mm. 
Total length from the end of the lower jaws to ischial tuberosity.......... 2,950 
Menge thyolscenvicaleneol onleemsenrys ition deeper pease Ac Aparranices alanine ay yetivere te 810 
enethtoitdorsalyreovonit ates seve eget cia eet cumin An vee vais a 860 
Heng throtlumibareneotone yes nisi ei iaiie ie ee eee nates 450 
Menethiomsachumeapproximate lye errr aerenitirs nreeeierie ee 200 
