SYNOPSIS. 



203 



X 



Figure 17G — Left ]>ini,til )jrijtub(_i mcc of Tinocera.s imce2)s. Marsh (Xo. 103U); side view. 

 PiGUUE 177 — Ihe ^imo speoiiiun, front view. ■ 

 a. anterior crest , 6 posterior crest. 



Both tigiires are one-half n.Ttura! size. 



Marsh, American Naturalist, Vol. VIT, p. 52, .Tanuarv, 1873; pji. 147, 152, March, 1873; 



p. 218, April, 187.'5; Vol. VII, Ap])endix, p. viii, June, 1873. 

 Proceedings of the American Philosophical Society, Vol. XIT, p. 57s, lor 1872, 1873; 



Vol. XIII, p. 256, 1873. 

 Coj)e (Uintatherium anceps.) — Proceedings of the American Philo.sophical 



Society, Vol. XIII, p. Gl, 1873. 



The type specimen of tliis species was of small size, and evidently 

 a female. The occiput is elevated, and has a median vertical rid<>'e. 

 The lateral crests extend from the front nearly to the summit of the 

 parietal protuberances. The latter are connected by a strong- ridoe jiassino- 

 directly over the brain-cavity. The j^ost-g'lenoid processes are trianoular 

 in horizontal section, with the apex outward. 



A second specimen (number 12fi()) has the na.sal j)rotuberances of 

 moderate size, and resemblinj^* those of Thioroyts qramJe. The prenasal 

 bones are firmly co-ossified with the nnsals. 



The type specimen (number lOaO) Avas discovered by Lieut. W. N. 

 Wann, in September, 1.S70, on the Divide near Sage C'reek, fifteen miles 

 southeast of Fort Bridger, Wyoming-. 



The remains of this specimen consist of portions of the skull, cervical 

 and dorsal vertebra^, and a tibia,. 



The second specimen (number 12GG) was found by Messrs. J. W. 

 Chew and L. Lamotte, in Augnist, 1874, in Wyoming. It consists of 

 portions of a skull, and a few other bones. 



The geological horizon of this species is in the Dinoceras beds of the 

 Middle Eocene^ 



The known remains of this species are preserved in the Yale College 

 Museum. "~ 



