Pitella 1945. Balanophyga formicivora June 13 2 mi SE Beegum, 1650 ft., Tehama Co., Calif. One noted in a N-NW facing draw rather densely vegetated with digger pine, oak, and tall chaparral. Quercus californica was especially prominent here, indicating a moister situation. June 14 Again noted on the south side in a comparatively heavy stand of oak and pine. One digger pine was used for storage garums. June 20. 2 mi E Hayfork, 2400 ft., Trinity Co., Calif. Several individuals (represent at least three pairs) were observed in stands of paper digger and yellow pine, and gray and black oaks along the east slope of lower Duncan Gulch. Several tall dead stubs of yellow pines showed numerous excavations made by this species. June 25-26 mi W Hayfork, 1200 ft., Trinity Co., Calif. Present chiefly in yellow and digger pines in mixed open forest of oaks and pines along the lower part of the south- facing slope above camp. One observed also in cottonwood within a grove of tall cottonwoods and willows along one of the cobble washes on the flat north of camp.