Erickson 1934 Ehrenberg 3 Thomomys b. chrysonotus arrowweed near, soil sandy. At one point in area observed, spur of mesa extending into mesquite association; bofher workings found on this stony ridge, but were not as abundant as on flat; no traps set on this ridge. From 4 traps set on 28th, took two individuals; one had a leafy section of arrowweed stem extending 30 mm. out of cheek pouch, extending beyond nose. Made 15 more settings, left one of those of 28th. Late afternoon took 6 more individuals, and one setting pulled into hole, reset one trap in which young individual secured. 4.3 mi. north of Ehrenberg March 2, 1934 A single individual taken from setting left.