1880. | Mammalogy in the United States in 1879. 165 
_phia Academy, of the American Philosophical Society, the 
AMERICAN NATURALIST, and the U. S. Geological Survey “ Bulle- 
tin.” The first of these has been already noted in connection 
with recent mammals. The NATURALIST contains many short 
papers, among which are: Extinct Mammalia of Oregon, p. 131 
(in full in Bull. U. S. Geological Survey, No. 1, Feb, 28, p. 55-69); 
Merycopatcr and Hoplophoneus, p. 197; a new Anchitherium (A. 
prestans); A Decade of Dogs (five genera, ten species) p. 530; 
and the Cave Bear of California (Arctotherium simum sp. n.), 
P: 791. 
Mr. J. A. Ryder, in shë NATURALIST for September, notes a 
remarkable genus of sloths, Grypotherium Reinhardt, typical of a 
sub-family Diarhine and a species of Cælodon Reinhardt, 1878. 
Mr. Cope's paper, above mentioned, in the Hayden Bulletin, 
describes for the Miocene Territories of Oregon: Exhydrocyon 
(g. n.) stenocephalus, E. basilatus, Poébrotherium sternbergii, Boich- 
@rus (g. n.) humerosus, Lutrictis lycopotamicus, Protolabis trans- 
montanus, spp. nn. 
The same author's “ Relations of the Horizons of Extinct Ver- 
tebrata of Europe and North America,” in the same Bulletin, pp. 
33-54, is doubtless his most important contribution, but it is one 
to which it is impossible to do justice in the present connection. 
His conclusions are: 
“I. Portions of all the faunz of all the primary divisions of 
geologic times have been recognized on both the European and 
North American continents. 
“IL. Parallels requiring general identification of principal divi- 
sions of these fauna may be detected. These are: the Coal. 
measures; the Permian; the Laramie; the ‘Meestrichtian ; the 
Eocene ; ae Miocene. 
HE Eia identifications of restricted divisions may be made 
in a few instances only; such are the Turonian and the Nio- 
brara; the Suessonian and the Wasatch; the Æguus beds and the 
Pliocene,” 
The Bulletin of the U. S. Geological Survey, Vol. v., No. 2} 
published September 6, 1819, has a paper by Mr. Cope, on the 
extinct Rhinoceride- of North America and their allies, which a 
goes very fully into the characters of the group, giving new defi- 
nitions of Perissodactyle families and genera, and- ical a 
. may of f the latter in detail, with analyses of- various species: 
