HOLLAND AND PETERSON: OSTEOLOGY OF THE CHALICOTHEROIDEA. 323 
The shaft of the ihum is rather long, when compared with that of the Titanotheres, 
and is more like that of the Miocene rhinoceroses. 
MEASUREMENTS OF PELVis.® 
No. 1706 No. 1701 No. 1705 
(elatus), (petersoni),  (petersont), 
Total length from point of ilium to end of ischial tuberosity............. 755 450 468 
Distance from point of ilium to margin of acetabulum................... 390 255 285 
Distance from acetabulum to end of ischial tuberosity................ .. 265 120 142 
. Transverse diameter between points of ilia..................-.22--+000- 638 326 458 
Transverse diameter at the acetabula.................. 0.00. c cece ee eee 386 220 248 
Extreme width between ischial tuberosities...................---0000-- 324 168 141 
Weng thtofobtunatorstonanlentri irene iri) acer en ee neta, 108 80 80 
Antero-posterior diameter of aeetabulum....................0...00000- 93 73 72 
Tue Riss. 
(Plates LXII-LXIV.) 
The material representing the ribs secured for the Carnegie Museum during 
the excavations made from 1905 to 1907 consists of the ribs belonging to the 
mounted specimen, No. 1604, all of which were found, except the first rib on the 
left hand side, which in the mounted specimen has been reproduced from the 
corresponding rib on the right hand side, which was found in practically perfect 
condition. These bones belonged to Moropus elatus. In addition to this material, 
ribs representing other specimens of Moropus elatus, and also belonging undoubtedly 
to Moropus petersoni were found in Quarry No. 2. This material is cataloged as 
follows: 
Catalog No. 1760 (M. peterson‘). 
Left first rib; left thirteenth rib; right eleventh rib. 
Catalog No. 1760A (M. petersom). 
Right first rib. 
Catalog No. 1761 (M. petersont). 
Two anterior ribs. 
Catalog No. 1762 (M. petersont). 
A series consisting of twenty-two ribs, many of them in excellent condition. 
Catalog No. 1763 (M. elatus). 
A series consisting of nineteen ribs in more or less perfect condition, together 
with the manubrium of the sternum in perfect condition, 
48 Measurements in italics are approximate, 
