THE MAMMALS OF MOUNT MAZAxMA. 
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Crater Lake, all the wav round to Llao Rock. It occurs also on the 
lava beds near Fort Klamath. 
Mountain Sewellel. Aplodontia major, Merriara. 
This curious animal, which looks like a bobtailed muskrat, 
occurs locally on Mount Mazama. Mr. Preble found a large colony 
in the canyon of Anna Creek, about half a mile from Pole Bridge 
Creek bridge. Their burrows and runways were mostly in low 
willow thickets immediately bordering the creek, but some were in 
thick rank grass near the edges of the willows. Many of the 
burrows and runways seemed to be in use, but the animals were 
difficult to trap, and only three specimens were taken. Consider- 
able quantities of hay, consisting mainly of grass, lupine, and stems 
of willows, were piled up to dry near the mouths of the burrows and 
on bushes and logs in the immediate neighborhood. This hay was 
found in small bunches with the butt ends close together, evidently 
just as carried in the amimal's mouth. Several other colonies were 
heard of, one in the upper Rogue river valley, another near the head 
of Sun Creek. 
Beaver. Castor canadensis, KuhL 
Klamath Indian name, Pome. 
Beaver are now scarce on Mount Mazama. Old signs are plen- 
tiful along a stream flowing into Diamond Lake, and a few trees 
were found there that had been recently gnawed. In the neighbor- 
hood of Fort Klamath numerous signs of former presence were seen, 
and along Wood river many alders and other bushes that had been 
cut down by them. 
European House Mouse. Mus musuclus, Linn. 
Some years ago a specimen of the common House Mouse was 
sent me from Fort Klamath by the post surgeon. Dr. J. C. Merrill. 
It was captured in 1886, and is of interest as showing that the 
species had penetrated to Fort Klamath before this date — perhaps 
many years before. Dr. Merrill tells me that it was common at the 
post during his stay. 
White-footed Mouse. Peromyscus Itucopns gambeli, (Baird). 
Klamath Indian name, Me-ko-ka. 
White- footed Mice, while universally distributed over the moun- 
