84 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



its soft call being audible at almost any time from dusk to day- 

 light, but none was seen. 



At Bray we were in a well populated colony of the Oregon 

 Ground Squirrel (Citelhts oregonus). Until we had taken 

 several in traps they were numerous all around our cabin, but 

 soon became very wary. In this region they are called "Picket 

 Pins" or "Bulldogs," the former name arising from their habit 

 of sitting by their holes, or on rocks or stumps, in an extremely 

 erect position and at a distance strongly resembling wooden 

 stakes. After our traps had taken two or three adults on the 

 edge of the meadow, a warning seemed to have been circulated 

 through the colony, for no trap was touched thereafter except 

 by an occasional young one, in spite of change of bait and of 

 smoking the traps to kill the scent of former casualties. This 

 ground squirrel is so numerous in this part of the state as to be 

 a great pest. Occurring here also in association with these 

 animals was the Golden Mantled Ground Squirrel (Callosper- 

 mophilus chrysodeirus chrysodeirus) , which greatly resembles 

 a large and handsomely marked chipmunk. The Klamath Chip- 

 munk (Eutamias amcenus amcenus) was also found here. 

 Mice, however, were very scarce and but few were obtained. 

 Those taken were of two species, each of which appeared to be 

 of intermediate form and neither of which has as yet been defi- 

 nitely determined. No shrews or meadow mice were taken, 

 although the meadow seemed a fine place for them. Probably 

 the irrigation had something to do with their absence, even 

 though the ground was never absolutely covered with water. 



After a week at Bray the party moved to Yreka, the county 

 seat of Siskiyou County, which we reached on the afternoon of 

 June 5. This town is at an altitude of 2620 feet and is in the 

 Upper Sonoran Zone. 



As this locality did not look very encouraging, we remained 

 only one day to collect a few Dusky-Horned Larks, and then, 

 on June 7, we moved to a place known as "Forest House 

 Mountain," so called on account of being just west of an old- 

 time tavern and resort called "The Forest House," on the road 

 to Scott Valley. Our camp was at a woodchopper's cabin a 

 few yards off the main road, known as "Robber's Rock Camp," 

 on account of a series of stage robberies having taken place 



