age - 1933 S.side Thompson Canyon 3000', Walker Basin, Kern Co., Cal.: Oct. '16, 1933. 219 Perognathus ♂ wt: 30 210-120-27-15 220 Peromyscus crinitus boylei ♂ wt: 25 185-100-22-20 221 Microtus ♀ wt: 79 195-58-23-17 222 Pipistrellos ♂ wt: 3.5 60-20-3-10 223 Eutamias ♂ & ♀ wt: 77 250-115-35-20 224 Neotoma fuscipes ♂ wt: 292 375-175-37-30 225 Sciurus griseus ♀ wt: 816 575-280-48-39 Specimens "219, 220, 221, & 224" were trapped by R.M. Gilmore. My own traps produced practically nothing today. I did catch a perognathus in a steel trap. I caught a ground squirrel in a steel trap this afternoon. I shot a young male grey squirrel this morning. And, while skinning the female this afternoon that I got last night I discovered it was, or is, the same one which I shot several days ago. I found numbers of no."12" shot under its skin. Also, I shot a chipmunk this morning. I forgot to mention that I have now collected every grey squirrel I have seen. There seems to be a shortage of mammals here, numbers of individuals, that is. The rodents are quite well represented as to genera and species, but there seems to be but a few of each kind. The bats didn't come out tonight. I