246 THE AURIFEROUS GRAVELS OF THE SIERRA NEVADA. 
which have been found, or which have come into the writer’s possession with 
the statements of others as to their being found, in the various detrital de- 
posits in and adjacent to the mining region of the Sierra. The names of the 
species will be given in each case ; then such remarks as have been furnished 
to the writer by Dr. Leidy, in the form of notes on the specimens submitted 
to him at various times during the progress of the Geological Survey. Some 
additional information obtained from other sources will occasionally be added ; 
and, especially, such as may be found in the “ Extinct Mammalia of North 
America” and in the Proceedings of the Philadelphia and California Acade- 
mies. The order followed will be that of the first-mentioned work of Dr. 
Leidy. Under each species indicated will be given such facts as have been 
obtained with regard to its locality and stratigraphical position. And, after 
all have been mentioned, the various occurrences will be classified, as far as 
possible, and the attempt made to ascertain what geological age should be 
assigned to the beds in which these remains occur. 
Of the Carnivora, none of the Felide, so far as known to the writer, have 
been met with in the Sierra Nevada, but the remains of one species at least 
have been observed in the Coast Ranges. They were discovered by Dr. L. G. 
Yates, at a locality near Livermore Valley. The specimens consist of frag- 
ments of the jaw, and have been described by Leidy under the name of Felis 
imperialis.* Of the Candee, a portion of the lower jaw of a wolf was obtained 
from the locality last mentioned, and considered by Leidy to be probably 
identical with C@. Indianensis,t a fossil species described as occurring with 
Megalonyx on the banks of the Ohio River; although possibly not different 
from the existing C. occidentalis. A tibia obtained by the Geological Survey, 
probably from Murphy’s and certainly from the auriferous gravel, in a per- 
fect condition and somewhat fossilized, was referred by Leidy to @. datrans, as 
being of about the size and form of the corresponding bone in the prairie 
wolf. £ 
The remains of the Boeide are of somewhat frequent occurrence in the 
detrital deposits of the mining region, and they have also been found in the 
Coast Ranges. Dr. Leidy says:§ “Remains of large oxen which were con- 
temporaneous with the American mastodon have been discovered in several 
* Contributions to the Extinct Vertebrate Fauna of the Western Territories, p. 228. 
WP esp: 230: 
t Dr. Leidy considers the formation in which these fossils (the tiger and wolf) were found to be “ qua- 
ternary.” There is abundant reason for classing them as Pliocene. 
§ Contributions, &., p. 253. 
