Hoffmanuth 1948 Neotoma fuscipes May 19 Walker Cr., 4 mi. SW Olancho, Inyo Co., Calif. 5200 ft. Caught a young ♂ in a mouse trap set along (within 15 ft.) of this creek. There are numerous large houses along the entire creek, and other small creeks nearby, apparently made by this species. On the evening of May 18, Russell and I heard "drumming" while owl hunting, which we assumed to be made by N. fuscipes. It was too loud for Lepida and the habitat was not suitable for cinerea. The rats have taken advantage of washed up debris around the base of the oaks, etc., in building their houses. May 21 Caught a ♂ (testis greatly enlarged) beneath an oak along Walker Creek. There are numerous houses all along this creek, up as far as I've gone. The houses are built [around] the base of oaks (only in 1 instance did I see any house up in an oak). Much of the debris has accumulated around many oaks due to the action of the stream at flood time. Very few of the houses seemed to have new material on them. Many apparently are unoccupied. During winter, these houses, in many instances, must be completely covered with snow. In 1 case, I saw a well-beaten trail leading from 1 house across an open sandy area to a shrub (similar to Adenostoma). May 30 5 mi. W & 1/4 mi. S Independence 6000 ft. Inyo Co., Calif. There are a few houses in the dense brush in this vicinity. I found 1 house about 7 feet high and fully 15 feet around the base of it in a thicket of willows, Rosa, bracken fern, isolated by Artemisia, Ceanothus, etc. 3 Scheylers