1936] MAMMALS OF OREGON 223 



corner of Goose Lake, Oreg. (fig. 50). It is probably safe to assume 

 that the beavers of the Klamath section, Lost River, Sprague River, 

 and the Yamsay Mountains, are also of this form. 



In January 1827 Ogden and his party of trappers in the Klamath 

 Lake section nearly starved because they could not find enough 

 beavers to furnish food for the party, but a few days later Ogden met 

 McKay's party of trappers with " 735 beaver skins taken on two 

 small rivers that discharge into Klamath River." Still later, in 

 February, he found beavers abundant along the Pit River, his trap- 

 pers bringing in large numbers every day, and on February 22, com- 

 pleting their first 1,000 skins. On March 9, he says : " It is a sin 

 to see the number of small beavers we destroy. Some females have 

 no less than five young." On March 11, his trappers came in with 

 72 beavers and 1 otter (1909, pp. %1%-217). 



On May 19, 1860, Lord on his way irom California to British 

 Columbia with a drove of horses and pack mules crossed the Klamath 

 River just above Lower Klamath Lake, which he described as a* 

 great tule marsh with open patches of water, which seemed to be the 

 " head center " of the beaver population of Oregon. This beaver 

 colony of many acres in extent was so populous that in some of the 

 ponds there seemed " no room to jam in even a tiny beaver cottage " 

 among those already occupying the area. Back from the lake shores 

 " the trees had been felled for a good half mile from the water " as 

 if busy emigrants had been making a clearing. The branches had 

 been cut from the trees and dragged along well-beaten roads to the 

 rushes, through which roads had been cut to gain easy access to the 

 open water (1866, p. $73). 



On Drew's Creek west of Goose Lake in 1897 there were several 

 dams and ponds, a small beaver house in one of the ponds, and many 

 trees and bushes cut for food and building material. In 1915 

 Jewett reported two dams freshly built of aspens and willows on 

 Drew's Creek. In 1914 L. J. Goldman reported them on the west 

 slope of the Yamsay Mountains, on Sprague and Yamsay Rivers, and 

 in the Klamath Marsh. In 1896, Preble reported them along Wood 

 River and Diamond Creek, and in 1914, Harry Telford reported them 

 on the head of Wood River and Diamond Creek, and near the mouth 

 of Anna Creek Canyon. Evidently they have held their own or 

 increased in this section in recent years. 



In July 1927 there were still a few beavers in Sprague River and 

 its branches north and east of Bly, but the old colony on Drew's 

 Creek that had been visited in 1897 was gone. 



In no noticeable way do the habits of these beavers differ from 

 other species in similar type of country. They now live mainly in 

 creeks or small rivers, where they build dams and houses and often 

 live in bank burrows. 



CASTOR CANADENSIS BAILEYI NELSON 

 NEVADA BEAVER ; HAK-NE-SHA of the Piute 



Cantor caiiadensis baileyi Nelson, Biol. Soc. Wash. Proc. 40 : 125-126, 1927. 



Type. Collected in Humboldt River, 4 miles above Winnemucca, Nev., by 

 J. H. Bunch, October 13, 1917. 



