Naye - 1933. 127 - Santa Cruz, Calif. Dec. 8, 1933. - - Summaries - A. - Mammals: We didn't do as well on mam- mals as was desirable, that however, was due to a lack of mammals rather than the lack of work. We did best at Thompson canyon, there not only being more mammals, but they were the first we took. Ukiah valley was our next best mammal camp. Of course we took several new species there. The two chief factors in the shortage of mammals are the poison campaign of 6 months ago, and the cold winter last year. Of lesser importance among the factors affecting mammal shortage is, or was the heavy trapping done for carnivores during the last two years. The facts demonstrating recent changes in mammal life in the Pintos and adjacent territory during the last few 12 months I are not too numerous. The chief of these are the empty pack rat nests to be found on all hillslopes. Also