Erickson 1934 Thomomys bottae 2 mi. south of Barker, 350 ft. Yuma Co., Ariz. Feb. 22, 1934. From seven settings made in morning took 6 gophers in late afternoon; all of settings made in salt grass fields of vicinity; specimen no. 393 had a single cube of salt grass root in cheek pouch; no. 398 had a root 1 inch long and 1/2 in. in diameter. 2 mi. south of Barker. Feb. 23, 1934 Two specimens taken from 4 settings made, one filled in. Settings in salt grass fields which at some time have been irrigated, but not recently soil dry as far as down as settings made. 2 mi. south of Barker. Feb. 24, 1934. Thirteen specimens taken from as many setting in field once planted to cotton now covered with saltgrass. One setting filled in, in another a male and female secured, nos. 402 and 403.