HOLLAND AND PETERSON: OSTEOLOGY OF THE CHALICOTHEROIDEA. 393 
molars are united with the external lobes by cross-crests: Pachynolophus Pomel, and 
Chalicotherium Kaup. 
Cope properly gives warning that the foot-structure of some of these genera is 
unknown, and that therefore there may be doubt as to the correctness of the proposed 
classification. 
1888. 
Ossorn, H. F.—‘Chalicotherium and Macrotherium.” American Naturalist, Vol. XXII, 
pp. 728-729. 
Dr. Osborn calls attention in a brief note to the fact that M. Henri Filhol has made 
the remarkable discovery at Sansan that Chalicothervum and Macrotherium are identical, 
and points out that Chalicotheriwm represents an aberrant form of the Perissodactyla, 
RttimMeyver, L.—Abhandlungen der Schweizerischen Paliontologischen Gesellschaft, 
Vol. XV, pp. 50-52. 
Meniscodon. ‘The writer discusses a tooth found at Egerkingen, which he compares 
with that of Meniscotherium Cope from the Wasatch. 
1889. 
Corn, HE. D.—‘ The Vertebrata of the Swift Current River, II.” American Naturalist, 
XXIII, pp. 151-155. 
In this brief paper Cope describes the mandibular symphysis and a part of the left 
ramus of an adult animal to which he applies the name Chalicothervum bilobatum. 
He then says: 
“ Although this is the first announcement of the discovery of the genus Chalico- 
thervum in America, it is not the first discovery. Professor Scott showed me a series 
of superior molars from the Loup Fork formation of Kansas, from the Agassiz Museum, 
which he identified as belonging to this genus. The present species is of larger size 
than the Kansas form and is apparently equal to the C. goldfussi of the Upper Miocene 
of Europe. The occurrence of this form in the Lower Miocene (White River), as well 
as the Upper Miocene (Loup Fork) of this country, is a noteworthy fact, but is parallel 
to its history in Europe. Described from the Upper Miocene by Kaup, it was after- 
wards found in the Middle Miocene (C. grande) by Lartet, and in the Upper Hocene 
(C. modicum), by Gaudry. 
The remarkable character of this genus, as discovered by Filhol, has already been 
mentioned in the Naturalist. It has little relation to the family of Perissodactyla 
to which it has given the name, and which it so resembles in molar dentition. It must 
form a family by itself, and the genera with which it has been associated must form a 
family to which the name Lambdotheriide may be applied. The anterior ungual pha- 
langes of Chalicotherium are of prehensile character and not ungulate, but rather unguicu- 
late. The phalanges resemble those of the Edentata, but the carpus and tarsus are, 
4 Osborn on Chalicotherium and Macrotherium, 1888, p. 728. 
