W. R. Reimer 1949 Journal 13 July Gila Bend to Organ Pipe Nat'l Mon., Pima Co., Ariz. In rocky areas adjacent to low range of hills are stands of saguaro and cholla. S of Pima Co. line are mesquite along washes but predominantly creosote desert. Crossed Co. line at 1455. Reached Mon. Headquarters, 17 mi. within Mon. just before sunset. Ate evening meal and returned to Ajo starting at 2050. Drove slowly entire way back seeing only Phyllorhynchus decurtatus and C. cerastes DOR's, one each. On road between Ajo and town well 8 mi. NNE town picked up 2 LOR Arizona, 1 DOR B. cognatus, 1 DOR P. platyrynchus. Just above town got series 4 B. elaeius by lanton light in small rivulet of water probably from mine. Water swelled strongly 7H2S and black slimy bottom. Toads mostly in dense Bermuda grass along edges of stream. After being in camp just outside Rowood and all ready to hit the "pad" Bob heard chorus of am phibis. Followed in car. Proved to be B. cognatus. Series of 7 taken as well as notes on calling and habitat. Taken in Rowood at base of mine sedimentation basin wall.