92 MEMOIRS OF THE CARNEGIE MUSEUM. 
On p. 32 Cope speaks of Macrotherium as an Edentate; on p. 33 he states that the 
remains of Chalicotheres have been found in the White River Beds; on p. 34 he gives 
the horizon of the European Chalicotheres as Tongrian, and on p. 694 he classifies the 
Chalicotheres and gives a table of characters for them. 
1886. 
LyDEKKER, RicHarp—“‘ Catalogue of Fossil Mammalia in the British Museum,” Part III, 
Chalicotheride, pp. 161-165. 
Dr. Lydekker includes all the Old-World forms under the genus Chalicotheriwm 
and sinks Anisodon Lartet and Nestoritheriwum Kaup as synonyms. 
P. 160. Homalodontotherium Huxley is briefly characterized from the dentition. 
—— — “Indian Tertiary and Post-tertiary Vertebrata. Part II. The Fauna of the 
Karnul Caves.” Memoirs of the Geological Survey of India, Vol. IV, p. 50. 
The author corrects the reference to the genus Manis of the species described by 
him in 1880, and names it Macrotherium sindiense. 
ScHLosseR, Max—Zodlogischer Anzeiger, Vol. IX, p. 253. 
“ The Chalicotheriide possibly begin with EHctocton Cope, one of the Condylarthra 
from which Meniscotherium and Hyracodontherium branch off as a Condylarthrous 
side-branch. The Chalicotheres themselves are derived from Lambdotherium. ‘This 
had its origin from a form which may also be regarded as the ancestor of Limnohyus 
and Palewosyops. From Paleosyops arise in succession Diplacodon, Titanotherium, 
and Leptodon.”’ 
“ Beitrdge zur Kenntniss der Stammes-geschichte der Hufthiere und Versuch evner 
Systematik der Paar- und Unpaarhufer.” Morphologisches Jahrbuch, Vol. XII, pp. 
1-136, Pls. I-VI. 
(An abstract of this paper is given in the Archiy fiir Anthropologie, Vol. XVIII, 
pp. 131-139.) 
1887. 
Corr, E. D.—‘‘ The Perissodactyla.” American Naturalist, Vol. XXI, pp. 985-1007 
and 1060-1076. 
In the “ genealogical tree ’’ proposed by the author he represents a line of descent 
from the Hyracotheriine, running in succession through the following families: Chali- 
cotheriide, Menodontide, Palzeotheriide, to the Equide. 
The Chalicotheriide according to Cope are related on the one hand to the Lophi- 
odontide and on the other to the Menodontide. Cope divides the genera which he 
regards as allied into two categories:—I, those in which the interior cones of the 
superior molars are separate from the external lobes: Ectocion Cope, Epihippus Marsh, 
Leurocephalus 8S. & O., Paleosyops Leidy, Limnohyus Leidy, Lambdotheriwm Cope, 
Nestoritherium Kaup; and, II, in which one or both interior cusps of the superior 
