HOLLAND AND PETERSON: OSTEOLOGY OF THE CHALICOTHEROIDEA. 385 
crescent between the anterior tubercle and anterior crescent, and an oblique crest 
extending from the latter to the adjacent horn of the posterior inner tubercle. Two 
external crescents on the last premolar. 
“This genus presents a curious combination in the structure of its molars of the 
character of Palwosyops, Hyopotamus, and Hipposyus. It is exceptional among the 
ungulates of the same fauna in the number of crescents of the molars. 
“Char. Specif. Last molar with the oblique inner posterior crest terminating at the 
posterior margin of the crown. Prominant external ribs at the point of connection 
of the external crescents of the crown. No cingula; enamel entirely smooth. 
MEASUREMENTS. 
M. 
STLength) (externally) of last four molars 2.052.462.2242 e sees eee ete te eee eee ns 029 
Mena thvokatmuehmolarse .evscesie cc aay dee eerie anna Cuar ee a a iundiu tee Wout Np cls Ae 022 - 
Menethrotapenwitimatesmolannic ss crey ease ee ye ea inal ae ee cee .009 
Wadthyot;penultimateimolars te seas re ie tees ae et ene ee tia tans ae ene .010 
“ This animal was about the size of the racoon, and probably had the habits of the 
tapirs.”’ 
Fitower, WitLt1AM H.—(Philosophical Transactions, Vol. CLXIV, p. 173.) 
Homalodontotherium cunninghami is described. 
Marsu, O. C.—“ On the Structure and Affinities of the Brontotheriide.”’ Amer. Journal of 
Science (3), Vol. VII, p. 82. 
The author states that the molars of the Brontotheriide resemble those of Chalico- 
thervum. 
1875. 
Cops, E. D.— Geographical Explorations and Survey West of the 100th Meridian, Systematic 
Catalogue of Vertebrata of the Eocene of New Mexico Collected in 1874.” 
P. 19. Meniscotherium chamense Cope, cited under the Perissodactyla. 
Gaupry, A.—‘ Sur de nowvelles piéces fossiles décowvertes dans les phosphorites du Quercy.” 
Comptes Rendus, Vol. LX XXI, p. 1113. 
Contains an account of the discovery at Bach in the canton of Lalbenque of the 
upper jaws of a Chalicotheriwm three-fourths the size of that of Chalicotherium magnum, 
revealing minor differences in the dentition. To this form he applies the specific 
name modicum, to indicate that the oldest representatives of the genus Chalicotherium, 
were smaller than their successors of the middle Miocene, which in turn were smaller 
than their successors represented by Chalicotheriwm goldfussi, of the upper Miocene. 
He also calls attention to the fact that the teeth of Chalicotherium and the other genera 
associated with it show that they were given to feeding upon grasses, and that therefore 
in the south of France before the middle of the Miocene epoch there must have been 
a considerable development of meadow-lands. 
