Hearne, H. 1988 September 9 (continued) Lots of cacti, agave, yucca, and some emergent boulder outcrops and high cliffs. We tracked the snake to a rock it has been under for several days, and counted 56 clicks/60 seconds. After that we walked it mile up (S) the road and could still get a clear signal if we wore headphones. Last rain here was ~5 days ago - hard. Dave Hardy arrived in the afternoon and w/Barny and Tony Snell we re-checked the radio-tagged Crotalus molossus at ~1700hr - 63 clicks/60 seconds. Just before that we saw an adult Cr. atrox on the Paradise Rd., just N. of the paved road out of Portal in mesquite. Barney and Tony caught me a Diadophis punctatus on the Paradise Rd. shortly thereafter, and Dave and I found a large F Phrynosoma cornutum basking at pavement edge between their house and the Portal store. It has a substantial healed wound in front of the left hind leg. We road hunted to the Sistrums area and made 3 passes, but got only a Rhinoscelus lecontei on the Portal Rd. and a DOR (heterodon) (stomach full) on Aug 80. September 10 Dave and I put down a Crotalus molossus w/ halothane that Barney and Tony caught w/in the last month on the Paradise Rd.: ♂ 1090 + 75 mm, 850 g, scar on head, 11 rattle segments - outer one incomplete, basal segment 16.5 mm, 10th segment 16.1 mm