398 MEMOIRS OF THE CARNEGIE MUSEUM. 
genus Artionyx Osborn & Wortman has been demonstrated by Scott, may be a highly 
specialized Artiodactyl, and Chalicotherium a highly specialized Perissodactyl. 
(This paper with certain omissions was also published in the American Journal of 
Science, Series III, Vol. 46, pp. 379-392, and 448-466.) 
Scorr, W. B.—‘ The Mammals of the Deep River Beds.’ American Naturalist, Vol. 
XXVII, p. 659. 
The author cites a species of Chalicotherium as found in the upper strata of this 
formation. 
ZITTEL, Kart A.—‘‘ Handbuch der Paleontologie,”’ Band IV, ‘ Sdugethiere.”’ 
On p. 26 the author gives a figure of the right forearm of Ancylotherium. On p. 205 
figures are given of the fore and hind feet of Hyracops Marsh (Meniscotheriwm Cope) 
and of Dendrohyrax. Meniscotherium is referred to the Condylarthra Cope (Meso- 
dactyla Marsh), under the family Meniscotheride. On p. 309 the Chalicotheride are 
recognized as the Seventh Family in the Order Perissodactyla. 
The following translation of the pages of Zittel, which relate to the Chalicotheroidea, 
was made by the writer on Oct. 9, 1907, and is here given, as up to the present time 
no English translation of the Fourth Volume of Zittel’s work in its original or revised 
form has appeared: 
Family CHALICOTHERID. 
Nasals long, projecting freely. Narial openings short. Orbits open behind. Dental 
formula I. 3s: C. 7° Pm. S: M. - Incisors and canines weak or altogether wanting. 
Upper premolars simpler than the molars, and possessing an inner cusp. Upper molars 
with W-shaped outer wall and two conical inner cusps. The lower molars formed of two 
V-shaped crescents, the inner ends of the crescents where they come together developing 
into two pointed minute tubercles. M; without a talon. The fore and hind feet three- 
toed, plantigrade, the unguals deeply cleft, strongly curved, claw-shaped. The third 
trochanter of the femur slightly developed. 
This family, which is widely distributed in Europe, Asia, and America, is composed 
of genera of considerable size, the dentition of which reveals marked similarity to that 
of the Meniscotheride and the Titanotheride. Incisors and canines are still present 
in the older forms, but in Chalicotheriwm are partially or wholly aborted. There is a 
diastema between the canines and the cheek-teeth. The skull most nearly compares 
with that of Palwosyops and Brontotherium, the nasals project freely, and are smooth, 
without bony rugosities on the upper surface. The frontal region is broad, the occiput 
low; the auditory bulle are cylindrical. The three-toed fore and hind feet and other 
portions of the skeleton which occur at Pikermi, Sansan, and Grive-St.-Alban mingled 
with the fragments of the skulls and teeth of Chalicotheriwum and Macrotherium differ 
so greatly from those of other Perissodactyls that they were assumed to be the remains 
