Greene, H. 1991 August 16 (continued) Copperhead site. at 0855h we found Crotalus molossus #3 stretched on the NW bank of the same ravine, ~30m S of the August 13 site. At 0920 h we released the C. molossus found August 14 at its capture site near Paradise. At ~0930h Dave and Baeray converged from opposite directions on an adult male C. molossus (to be telemetered #9) as it crossed the road ~100m E. of the picnic pullout in our study area. At 1050 h, Kelly and I found C. molossus #8 under the edge of a boulder on a ledge, shaded by agaves, ocotillo, and a juniper tree skeleton, ~40m SW of last night's site (took 3 photos). After lunch we surgically implanted a transmitter in new C. molossus male #9 and processed another adult male found in the yard of Uncle Jensen in Portal this morning. I went to Douglas for dinner w/ Diane Wagner, and saw only 2 G. atrax on Hwy 80. August 17 Near Scotia Canyon, Huachuca Mtns., Cochise Co, Arizona We left Portal at ~0500h and met Fred Wilson, Roger Roggs and Roger's son and friend here ~0800h. At 0715h as we topped Montecelna Pass an adult Nasua (patha, more yellow than I remember them in Costa Rica) ambled across the dirt road. We are here because Fred says Crotalus willardi are common. The site is ~d.l. 5700' open oak-juniper savanna, the ground fairly open w/ grasses and trees so spaced there isn't a closed canopy except near the canyon bottom near watercourse. It is the first right hand turn up a dirt road off.