22 



Restoration. The elevation of this animal was not much less than that 

 of the LoxolopJiodon cornutus, but the proportions were more slender. As 

 in all the species of Uintatherium in which the horns are known, these 

 appendages stood in front of the orbits, and nearer the nareal opening 

 than in the type of the former genus. The muzzle, too, is materially 

 shorter and more contracted, and the true apex of the muzzle was not over- 

 hung by the great cornices seen in Loxolopliodon. The horn-sheaths were 

 probably simple, while in L. cornutus they were probably palmate. The 

 occipital and parietal crests are much more extended in this species than 

 in the L. cornutu% so that in life the snout and muzzle had not such a 

 preponderance of proportion as in that species. All the species of this 

 genus were rather more rhinocarotic in the proportions of the head, 

 although the horns and tusks produced a very different physiognomy. 

 The extremities of the nasal bones, though not excavated as in that 

 species, are strongly pitted and exostosed, and this taken in connection 

 with the elevation of the head renders it probable that this species also 

 possessed a proboscis. 



History. This species was originally described by the writer in a short 

 paper, which was published and distributed August 19th, 1872, under the 

 generic name Loxolophodon. I shortly afterwards referred it to the new 

 genus Eobasileus, under the name cornutus, under the impression that it 

 was the same as the Loxolophodon cornutus; but finding this was not the 

 case, I again used the specific name here adopted. More than a month 

 later Prof. Marsh (September 21st) described a species under the name 

 of Tinoceras grandis, which agrees with this one so far as relates to the 

 length of horn-cores, but that it is the same species cannot now be 

 positively asserted. I originally (August 20th, 1872) alluded to the 

 horn-cores as situated on the frontal bones ; Marsh has since asserted 

 them to be composed of the maxillaries. I have discovered on the first 

 opportunity of making a detailed examination, that the inner face is 

 composed of the posterior part of the nasal bones, and the exterior of 

 the maxillaries. 



EOBASILEUS FUBCATUS. Cope. 



Loxolophodon bifurcatus, Cope, in extra copies on Proboscidians of the 

 Eocene of Wyoming, August 19th 1872.* Loxolophodon furcatus in the 

 same, Proceedings American Philosophical Society, 1872, p. 580, Aug- 

 20th. L. c. 488, August 22d. 



This species was originally described from a large horn-core whose 

 extremital part resembles strongly the nasal shovel of Eobasileus cor- 

 nutus, on which account I referred it to that position on the skull. 

 Marsh has described somewhat similar horn-cores from the lateral crests 

 of the skull behind in II. mirabile, whence it may be that my specimen is 

 referable to that position, although it differs much from those of that 

 species. 



* See Proceedings American Philosophical Society, 1872, p. 515, where this name is recorded. 



