Oct 1931 Eastern slope of Irish Mountain, 6800 ft., Lincoln Co., Nevada. June 6, 1931 Camp is located at a small spring up in the edge of the Pinyon belt. Small oaks and sage brush is present. Hummingbirds (species as yet undetermined) are very abundant, also Morning Doves. Since we have todays specimens to make up tomorrow we only set out about thirty traps apiece. June 7, 1931 This A.M. traps contained only Peromyscus maniculatus (4). Shot a rabbit as I was returning from my trapline (Specimen no. 183) Peromyscus maniculatus sonorinus - ♀ 159-77-21-19 " " " - ♂ wt. 22.6g. 165-75-21-19 " " " - ♂ wt. 20.7g. 156-68-20-18 Dipodomys leipes (June 6th) - ♀ 168-153-42-14 S. gylolagus - ♀ 384-54-85-18 Perognathus parvus - (June 6th) - ♂ 184-97-25-9 The rabbit (no. 183) had enlarged mammary gland, and indications in the uterus that it was just starting pregnancy. The uterine blood vessels were very much enlarged. Set out 39 more traps this P.M. June 8, 1931 Out of 39 traps placed at an average of 20 paces apart along the bottoms and sides of canyons, there were