Hoase, H. 1992 July 31 (continued) and back and heard a rattle 1.6 mi W of Portal at 1905h - stopped and found a ♂ C. molossus coiled in the roadside drainage gully (6 sqm/s or slightly tapered rattle, incomplete, 877+68mm, 502g, fees collected). I assumed a tightly coiled defensive posture, rattly and cresting backwards, and struck once when I approached. August 1 at 0902h I saw a huge Sceloporus lemos crawly slowly w/ lateral turns of the anterior, a few m from the shade of a prickly pear on gravel. It is overcast and not especially warm. At 0905h I spotted C. molossus ♂ #9 stretched over the lowest limb of a small acacia in grass, just east of the same sarine where I saw him in May (but farther W), and far east of yesterday's site. At 0908h he resumed crawly w/ continuous tongue flicks and frequent head turns over and down into grass clumps. He seems intense! I could hear his rattle "chatter" passively a few times as he moved through vegetation. By 0923h he had crawled a loop out into the grow east of the gully, then back over the boulder and it 75 cm up into the tree. At 0926h he crawled it 1 body length down the tree trunk, almost vertically and in a straight path then out into the grass again. At 0952hnd found C. molossus ♀ #12 in a hunky wil at the same site as yesterday, took photos. She faces the