Ruth, Stephen 1971 Reptile Collecting Trip May 11-15 Species List pages Sauromalus obesus 2,3,8,9,11,12,13 Cnemidophorus tigris 2,6,8, Crotaphytus collaris 2,20,23 Uma stansburiana 2,4,5,8,13 Gopherus agassizi 3,6 Pipsosaurus dorsalis 3,4,9,10,12,18,23 Phrynosoma pleurhinos 5, sp. acct. Uma scoparia 5,8 Callisaurus draconoides 6,10,12,16,19 Arizona elegans 5, RCS sp. acct., 6 Crotalus cerastes 10,17 Sceloporus magister 13, 23 Xantusia vigilis 13,20 Hypsiglena torquata 14 Uma inornata 14 Phyllodactylus dumerilii 15 Coleonyx variegatus 15,21 Una notata 16,17,18 Crotaphytus wriizenii 18 Phrynosoma mcalli 19 Xantusia henshawi 20 Crotalus ruber 20 Phyllodactylus xanti 20 Bato cognatus 21 Chionacris occipitalis 21 Streptosaurus mcamsi 22 crotalus mitellii 22