18 July 294-295 Bufo mazatlanensis - both dug out from beneath the litter under wood piles bordering the fields. 296 Pituophis melanoleucus - one seen in a large wood pile next to an open field. Posterior blotches of dorsum were chestnut brown & the ground color was straw colored. Mammals: Thomasys unstrius left the Bacanora locality about 6:15?? and proceeded east in the Sahuaripa road. Got one Phrynosoma solare as follows: 3.6 miles E. Bacanora, Son. (by road). Pulled off into the south side of the road at a point 2.4 miles W. Sahuaripa Son. (by road). Had dinner in the rain and dark & then went back west along the road to hunt for frogs & lizards. Saw a large Bufo alvarius and collected another small one (#298). Also got a Bufo mazatlanensis (#299) and a Phrynosoma solare (#300) - all along the road. The locality for these 3 specimens (298-300) should be 2.6 miles W. Sahuaripa Son. (by road). Went to bed in a slow rain which kept