GIGANTIC MAMMALS OF THE GENUS EOBASILEUS. 159 
A species different from the E. cornutus is represented by 
numerous remains. The most characteristic are the horn-cores, 
which are compressed at the base, somewhat acuminate and with- 
out inner enlargement. This may be called E. pressicornis. ° 
The general form was stout and heavy, and less elevated than 
4 in the existing elephants. With proportions somewhat as in the 
rhinoceros, the species E. cornutus was larger than in any known 
This form will probably be found to be the predecessor in time 
of the huge forms of Proboscidians now known, and certain allies 
will be found to stand in the same relation to the odd and even- 
toed ungulates. 
Remains of six of these huge quadrupeds were found in one 
locality in Southern Wyoming, and bones of at least twenty were 
found by the expedition. : 
Since the above was read at Dubuque it has been ascertained 
that the E. pressicornis and E. Jurcatus belong to the genus Uin- 
tatherium, having rudimental knobs instead of flat shovels on the 
nasal bones. This genus differs from Hobasileus in the rudimental 
character of the nasal horn-cores, and in the presence of an ele- 
vated lateral parietal crest. In Eobasileus the latter is almost 
wanting. They also differ in the character of the posterior (third) 
pair of horn-cores. 
Subsequently, at a meeting of the Philadelphia Academy of 
Natural Sciences (January 14, 1873), the writer gave his reasons 
for regarding the genera Hobasileus and Uintatherium as Probos- 
cidians constituting a peculiar family of the order, and his objec- 
tions to referring them to a new order as has been proposed by 
Professor Marsh. He said he had first (August 20, 1872) given 
reasons for regarding them as Proboscidea, though Professor Marsh 
* 
Some of the reasons are as follows: 
1. The extreme shortness of the fi tremity of the nasal bones. 
2. The malar t i o ee ' If th “241 7 t of th 
3. The cervic 
qa 
: _ latter beside it 
5. The f; 
a 
una 
aa 
8 =. 
_ tudinal keel. 
is 5. The ast P % 4. i wen hot with a uniform face. 
species of that genus, being quite equal to the mastodons in bulk. ~ 
had previously referred one of them to Mastodon by name only. 
al dingly short and t See. 
4. The radius crosses the ulna obliquely and leaves a large carpal surface to the 
1e femur is wit! hird I l! or fossa for the nd li = ent. - Ba: 
-7 6. Its condyles are contracted and the intercondylar fossa is prolonged and fissure 
» like. nh 
7. The spine of the tibia is absent, and the glenoid cavities separated Ima longi- 
e zygomatic arch. : a 
