Thaler 1958 species account p. 1 June 15 Thomys monticola monticola p. 1 yesterday we (Ben and myself) set gopher traps on the Ferrero Ranch, 3600 ft. 1/2 mi. N Mt. Shasta PO. (T40N, R4W, sec9) Siskiyou Co. Cal. This morning we had a total of 10 gophers (I had 5 from 6 double and one single set.) One was an ad. ♂ (C.S.T. # 463) all others were ad. ♀♀. (#s 464-467 for those I caught). All of these appeared different from those taken prior on the Semberdis ranch (see T. m. "picturus" The ♂ had a distinctly shorter occularis, also the ears were in general larger, esp. the crown measurement which was usually for 9 mm rather than 6 or 7. Also the tail length averaged larger. The ears, esp. of the ♂ were distinctly pointed. They seemed to average less in weight than the other gophers, but this may be correlated to what appeared to be a poorer field. The habitat was the gentle slope of the base of Mt. Shasta (the others were on the valley floor). The field I trapped over an old alfalfa field that now had a covering of grass and annuals & scattered alfalfa plants. The soil seemed harder, with less rock in it than the soil where the gophers from Semberdis were taken. It was dark brown for the first 10". Below was a more sandy lighter earth.