UNGULATA PBRISSODACTTLA, UNGULATA ARTIODACTYLA. 15 
P. Gervais discusses the typical form of the extremities, comparing 
the fossil and recent forms. J. Zool. iii. pp. 300-307. 
^ AncMtherium exoletum and A. cuneatum^ spp. nn. (foss.), E. D. Cope; 
Miocene of Colorado. Pal. Bull. No. 16; Eep. U. S. Geol. Surv. 1873, 
pp. 496 & 497. 
-^Orotherium index, sp. n. (foss.), E. D. Cope; Eocene of Colorado. 
Tom. cit. p. 459. 
Hippotlierium paniense, sp. n. (foss.), E. D. Cope ; Pliocene of Colo- 
rado. Bull. U. S. Geol. Surv. 1874, p. 12 ; Rep. 1873, p. 522. 
'i Protohippus lahrosus, sp. n. (foss.), E. D. Cope ; Pliocene of Colorado. 
Tom. cit. p. 13 ; Rep. 1873, p. 52.3. 
Equus burchelli. Three zebras in the Paris Jardin d’Acclimatation 
have been trained to harness ; St. Yves Menard, Bull. Soc. Acclim. (3) i. 
pp. 257-266. 
Genera incert^ sedis. 
Homalodontotherium (= Homalodotherium, HuxL). W. H. Flower 
describes the only known specimen (from Patagonia), and names the 
species IT. cunninghami. It appears to have connected the truly perisso- 
dactyle forms Rhinoceros and Hyracodon with the more aberrant Nesodon 
and T'oxodon. Phil. Tr. 1874, pp. 173-182, pi. xvi. 
Oltinotherium, g. n. (foss.), Delfortrie. Its affinities are doubtful, an 
incisor being the only part known . Type, 0. verdeani, sp. n., Eocene of 
France. Act. Soc. L. Bord. xxix. pi. vii. ; J. Zool. iii. p. 465. 
Tillotherium latidens, sp. n. (foss.), 0. C. Marsh ; Miocene of Wyoming. 
Am. J. Sc. (3) vii. p. 633. 
UNGULATA ARTIODACTYLA. 
HiPPOPOTAMIDiE. 
^Hippopotamus amphihius. Measurements of the blood corpuscles ; G. 
Gulliver, P. Z. S. 1874, p. 579. 
Chceropsis liheriensis. On the visceral anatomy and myology of a 
young female which died in the Dublin Zoological Society ; A. Macalister, 
P. R. Irish Ac. (2) i. pp. 494-500, pi. xxviii. 
SuiDJ!. 
Sus moupinensis, described and figured ; A. Milne-Edwards, Rech. 
Mamm. pp. 377-379, pis. Ixxx. & Ixxxi. 
<Elotherium ramosum, sp. n. (foss.), E. D. Cope ; Miocene of Colorado. 
Bull. U. S. Geol. Surv. 1874, p. 27 ; Am. Nat. vii. p. 437. 
Elotherium. hathrodon, sp. n. (foss.) 0. C. Marsh ; Miocene Dakota. 
Am. J. Sc. (3) vii. p. 534. 
APelonax, g. n. (foss.), E. D. Cope. Allied to Elotherium, but with four 
digits on each foot, and a rudimentary fifth on the pes. Types, Elothe- 
rium crassum. Marsh, and E. ramosum, Cop6. Rep. U. S. Geol. Surv. 
1873, p. 604. 
