Greene, H. 1990 August 17 C. undosus ♀ #5 is in the same exact spot as (continued) yesterday , in a tight coil , head in center and filled up-she is hard to see under a low acacia . at 0920hr , C. molossus ♂ #6 is in the same site as yesterday , in shade , seemingly frozen while uncoiling under the big surface root of the ~1m high, leafing-out acacia that conceals him . At 0955hr , we spotted C. molossus ♂ #1 crawling at ~1 total length /16 seconds , seemingly undis- turbed. He glides along w/ only slight lateral dis- placement, occasionally pointing the head laterally and down , then disappears over a rock shelf into a prickly pear clump . He's at ~the same elevation as yesterday , but >100m west of that site and as if going down across the base of the rim rocks . At 1017hr we resighted him, crawling as before ; by 1019hr he was~4-5 meters from that 1017hr point , crawling at ~total length /~20seconds , moving his head slightly from side to side and tongue-flicking . At 1605hr we returned to find C. molossus #1 out in late afternoon sun crawling , ~25m west of this morning at same ~elevation . He crawled into the shade of a fallen dead ocotillo as I approached and froze, but didn't rattle . At ~1646hr we found C. undosus ♂ #3 in a tight coil in the crotch of a walnut (?) tree.