18 Mamm. 
MAMMALIA, 
Equid^e. 
Eohippus., gen. n. foss., 0. C. Marsh, allied to OroJiippus, but with a 
rudiment of the fifth metatarsal and different premolars ; types, E. 
validus and E. pernix^ spp. nn., lowest Eocene of New Mexico and 
Wyoming. Am. J. Sci. (3) xii. pp. 401 & 402. 
UNGULATA ARTIODACTYLA. 
ANTHRACOTHERIIDiE. 
Merycopotamus. R. Lydekker describes the osteology of M. dissimilis 
in detail ; he places the genus among the Hippopotamidce, forming a link 
between that family and the Anthracotheriidce. Rec. Geol. Surv. Ind. ix. 
pp. 144-163. 
Anthracoiherium magnum. Remains found in Styria described ; R. 
Hoernes, JB. geol. Reichsanst. 1876, pp. 109-142, pi. xv. 
Hippopotamid.®. 
Hippopotamus Mpponensis^ sp. n. (foss.), A. Gaudry, Bull. Soc. G4ol. 
1876, p. 504, pi. xviii. 
ELOTHERIlDiE. 
Farahyus,g. n. (foss.), O. C. Marsh, Am. J. Sci. (3) xii. p. 402 ; allied to 
Elotherium and HeloTiyus, but with one less premolar. Type, P. vagus, 
sp. n., Lower Eocene of Wyoming. 
SuiDiE. 
Sus. R. Hensel discusses the homologies of the teeth ; Ver. L.-C. 
Ak. xxxvii. (1875) art. 5, pi. xxvi. In an abstract of a paper “ On the 
Pre-historic British Sus,'* G. Rolleston considers the pre-Roman British 
Pig to have been derived from S. scrofa, while the Asiatic domes- 
ticated S. indicus probably descends from S. cristatus ; P. L. S. xiii. 
pp. 108 & 109. 
Phacochoerus celiani. Notes on its habits ; J. Menges, Zool. Gart. 1876, 
pp. 265-271: 
AnOPLOTHERIIDJ]. 
XipJiodon platyceps, sp. n. (foss.), W. H. Flower, P. Z. S. 1876, p. 7, 
pi. i., “ box stones ’’ of Suffolk Crag ? 
OREODONTIDi?. 
Merycochcerus. G. T. Bettany describes skulls collected in Oregon 
by Lord Walsingham, revises the generic characters, and describes M. 
temporalis (p. 269) and M.' leidyi (p. 270), spp, nn. (foss.), J. G. Soc. 
xxxii. pp. 259-273, pis. xvii. & xviii. 
