Hoffmeister 1942 Itinerary June 15 1/4 mi. N & 2 1/2 mi. E Benton Station, 6900 ft., Mono Co., Calif. pixons and lower down. California Jays were seen and heard in the canyon (4 birds) but none were collected. They are exceedingly wary. There is considerable evidence of Crethizon epizanthum and Russell found a young porcupine crossing the Artemisia flat a short distance below camp. Spotted Towhees are abundant as are Black-headed Grosbeaks. Bush-tits have young out of the nest. June 16 Set out 75 mouse traps in various habitats down the canyon from the camp site. Caught 8 Peromyscus maniculatus, 4 Merimutis, 2 P. truei, 3 Perognathus parvus, 1 Dipodomys (panamintinus?), and caught 1 Thomomys in a set. About 75 percent of the traps were in the same habitat as was the 1 trap which caught the Dipodomys. The Thomomys was caught in light-colored, hard- packed, rocky soil in a Artemisia Tongue of between two projections of pioxons. The ? Thomomys had the mammary glands well exposed, although there was little sign of lactation. The presence of dry & green (few) grass cuttings in one cheek pouch led me to think this material was intended for nest material. No embryos were found. Gopher signs is not abundant in this vicinity now alth- ough there is evidence of winter workings. In returning from my trap-line, and hunting birds, I saw 5 or 6 California Jays. I shot 1 which proved to be a juvenile. The bird was only injured and I thought its cries might cause the other