218 3. IGUANID.^ 



sometimes alternating there. These dark markings may be 

 nearly absent. They often are edged with blue. In many 

 specimeKs the black bar on the shoulder is particularly dis- 

 tinct. l"he limbs usually are unicolor, but rarely are cross- 

 barred with dusky above. The sides often show small blue 

 dots. Ihe lower surfaces are yellowish white more or less 

 flecked with black or slate. Males have a long blue area on 

 each side of the belly. The color of the throat in males 

 varies from canary yellow to deep Chinese orange; in fe- 

 males from white to pale yellow. The upper surface of 

 the nil is gray, brown or black with or without indefinite 

 cross-bands. 



length to anus •il 44 44 44 49 



Length of tail 73 79 79 84 89 



Gular fold to anus 27 31 30 30 34 



Shielded part of head 9 9 10 10 



Snout to ear 9 10 10 10 10j4 



Width of head 7>^ 8 9 9 9 



Fore limb 17 18 20 19 20 



Hind limb 26 28 29 31 32 



Base of fifth to end of 



fourth toe 11 11 12 121^ 13 



Distribution. — This lizard occurs throughout the south- 

 ern end of Lower California. It is not strictly confined to 

 the Cape Region, for it has been found on Magdalena Is- 

 land and on Espiritu Santo and Ballena islands. In the Cape 

 Region, it has been collected at La Paz, Cape San Lucas, San 

 Jose del Cabo, Miraflores, Sierra San Lazaro, Todos Santos, 

 Agua Caliente, Santiago, San Antonio, Triunfo, San Pedro, 

 and in the foothills of the Sierra Laguna. 



Habits. — These lizards frequented rock piles, stone 

 fences, and the granite boulders in the canyon bottoms, but 

 more commonly were found in mesquite and other trees 



