404 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH SER. 
26.—Sceloporus clarkii Baird and Girard 
We have secured eighty specimens of this lizard. “Twenty- 
three of these are from Tucson, where they were shot between 
March 28 and April 24, 1912. Two (Nos. 20951 and 20952) 
are from old Fort Lowell. Seventeen were collected in the 
foothills of the Catalina Mountains, near the steam pump 
eighteen miles north of Tucson, May 2-18, 1912. One (No. 
34685) was taken in the Catalina Mts., at an elevation of 8500 
feet on the trail to Mt. Lemon, May, 1912. At Oracle, Pinal 
Co., two specimens (Nos. 34167, 34168) were caught April 
2 and 3, 1912. Mr. Herbert Brown gave us five (Nos. 33819 
to 33823) from the Patagonia Mountains, Santa Cruz Co., 
July 11-21, 1910. Five of these lizards (Nos. 35179 to 35183) 
were collected at Fairbank, Cochise Co., Aug. 13-18, 1912. 
From the Huachucas we have twelve specimens (Nos. 34882 
to 34893) taken in the lower portions of Ramsey, Carr, and 
Miller Canyons, July 2-29, 1912. Mr. Slevin collected four- 
teen in the Chiricahua Mountains, one (No. 35141) from Cave 
Creek, and thirteen (Nos. 35005 to 35017) from Paradise, 
August 4-8, 1912. 
The femoral pores in thirty-eight specimens vary from eleven 
to fifteen; being 11 fifteen times, 12 thirty-three times, 13 
seventeen times, 14 nine times, and 15 twice. The average of 
the seventy-eight thighs is 12.34. 
At Oracle these lizards were found in cracks in the granite 
boulders. The one from Mt. Lemon was also taken on a 
boulder. Nearly all the others were found on trees—at Tucson 
on willows along the Santa Cruz River, in the foothills of the 
Catalinas on mesquites, in the Huachucas and Chiricahuas on 
oaks and pines. Those taken at Fairbank were under the 
eaves of an old adobe barn. They sometimes climb trees to a 
height of thirty or forty feet. 
27.—Sceloporus magister Hallowell 
Nineteen Arizonan specimens are in the collection. Nos. 
33488 and 33489 were found in an old adobe house at Yuma, 
March 11-16, 1912. In Maricopa County this species was col- 
lected (No. 17286) at Paradise Valley, and (Nos. 17287 to 
17289 and 20718) at Cave Creek, May 14-19, 1910. Two 
(Nos. 34054 and 34057) were secured near Tucson, April 1— 
