76 3. IGUANID^ 



Warren's Wells, Blythe Junction, 1 5 miles east from Blythe 

 Junction, five miles south from Lovic, Needles, Barstow, 

 Ludlow), Riverside (Torres, Palm Springs, 45 miles west 

 from Blythe, Thermal, Coachella, Mecca, Cottonwood 

 Springs, San Bernardino Mts. east from Coachella, San 

 Jacinto Mts. west from Coachella, Palm Canyon, east base 

 of San Jacinto Mts.), and Imperial (Imperial Valley, Melo- 

 land, five miles east from Coyote Well, Pilot Knob, Fort 

 Yuma), counties. 



In Nevada, it has been taken on the Amargosa Desert, 

 Nye County, and at Callville on the Great Bend of the 

 Colorado River, Clark County. 



The eastern limits of its range in Arizona are not known; 

 a specimen in the National Museum is labeled Florence, 

 Pinal County. It seems not to occur near Tucson. It is 

 common at Yuma, and has been taken at Quitovaquito on 

 the Mexican boundary line, and at Tempe, Phoenix and Cave 

 Creek in Maricopa County, at Papago Wells, Yuma County, 

 and at various localities along the Colorado River ( 1 miles 

 below Cibola, Yuma County; Mellen and the Needles Peaks, 

 Mohave County, etc.). 



Specimens from northwestern Sonora are in the U. S. 

 National Museum. 



In Lower California, it has been collected at Gardner's 

 Laguna, Volcano Lake, Salton River, San Felipe Bay, be- 

 tween San Quintin and Comondu, San Luis Gonzales Bay, 

 San Nicolas Bay, Puerto Escondido, Agua Verde Bay, San 

 Ignacio, and San Xavier, on the peninsula, on Magdalena 

 Island on the Pacific coast, and on San Luis, Angel de la 

 Guardia, San Marcos, Monserrate, and San Jose islands, in 

 the Gulf of California. 



Habits. — At Yuma, these lizards live in burrows in the 

 mounds of sand which the winds heap up around the cactus 



