Page 2 At the time I did the project, Phrynosoma m'calli was the third most abundant lizard in the area between Brawley and the Algodons Dunes. Consequently, it did not seem inappropriate to collect this number for such an investi- gation. Little did we know that the population of this species would drop to the present level. At any rate, here is the information you requested: Hatchlings Adults Male Female Male Female Snout-Vent length (mm) N= 29 30 148 157 Range= 29-48 33-50 63-83 63-88 Mean- 37 40 73 75 Weight (grams) N= 29 30 71 72 Range= 1.9-4.7 1.5-5.6 7.9-19.9 8.1-24.3 Mean= 3.0 3.2 13.1 14.2 Sincerely, Wilbur W. Mayhew Professor of Zoology WWM:rc