20 University of California Publications in Zoology. [Vol. 7 



whatever in the immediate vicinity. The beach was thickly 

 strewn with drift, affording refuge to numerous mice of the 

 genus Peromyscus. 



CHICKAMIN BIVEE. 

 A broad, shallow river on the mainland coast of southern 

 Alaska, emptying into Behm Canal a little north of the 

 center of Revillagigedo Island. Our camp was located about 

 two miles from the mouth of the river, on the north bank, and 

 unless otherwise specified, all the specimens mentioned as col- 

 lected on the Chickamin River were taken within five miles of 

 this camp. On all sides were broad stretches of meadow land, 

 waist high with grass and flowers, and dotted with clumps of 

 spruce or willow, while on the edges were scattering fringes of 

 alder, between the meadows and the forest. The valley at this 

 point is some three or four miles across, and on either side the 

 mountains rise steep and precipitous. 



PORTAGE COVE, EEVILLAGIGEDO ISLAND. 

 Directly opposite the mouth of the Chickamin River. 

 Although the chart showed only a little bay or inlet at this 

 point, we discovered that a good-sized stream pierced the rocky 

 wall on the south side of the cove, like a narrow gateway, open- 

 ing into a broad, level valley beyond. We ascended the river 

 about three miles and established camp on the north side of the 

 stream. On both sides of the river are broad grass-covered 

 meadows, intersected in all directions by winding tide sloughs. 

 Although the river banks are ten feet high or more, these 

 meadows are all swampy, with pools scattered everywhere. In 

 places long tongues of woodland extend out into these open 

 tracts, scattered growths of spraice, hemlock and cedar, with 

 much low underbrush; but even in this timber the ground is 

 saturated, and the trees do not thrive as there are as many dead 

 stubs as live trees. (See plate 2.) In places there are clumps 

 of scrubby willow, and here and there large areas entirely 

 covered with them. The valley is about half a mile across at 

 the site of our camp, with the mountains rising abruptly at 

 either side. At their base the underbrush is so thick as to be 

 impassable. Apparently the winter climate of this place is 



