70 3. IGVANIDM 



are all referred to the one species, C. hemilo-pha. Femoral 

 pores in specimens from San Esteban Island vary from five 

 to eight J in those from San Pedro Nolasco Island, from 

 six to ninej in ten from Ceralbo Island, from six to eighty 

 in 50 from the Cape Region, from four to seven. 



Distribution. — This species occurs in the southern por- 

 tion of the Lower California Peninsula, where it has been 

 talcen at Cape San Lucas, San Jose del Cabo, Miraflores, 

 Agua Caliente, Sierra San Lazaro, Pescadero, La Paz, San 

 Pedro, Triunfo, San Antonio, San Bartolo, Buena Vista, 

 Santiago, and Todos Santos. It has been collected also on 

 Ceralbo, San Pedro Nolasco, and San Esteban islands in the 

 Gulf of California. 



Habits. — This large lizard is very common in many 

 parts of the Cape Region, where it lives either among rocks 

 or trees. It ordinarily lives upon vegetable food, but it 

 may eat crabs when its usual food is scanty. It is locally 

 known as the Iguana, and is eaten by the natives. Its spiny 

 tail is used by it as a means of defense. 



Mr. Slevin notes that: "It is fairly abundant where 

 found, and inhabits the large granite boulders in company 

 with Uta thalassina. Where boulders are not plentiful 

 these iguanas resort to the trees. At San Bartolo they were 

 seen only among the granite boulders, which abound in that 

 vicinity, but at San Pedro and Agua Caliente they were 

 found in the trees. None was observed on the ground. 

 They seem to live strictly on vegetable matter, and the 

 stomachs of all the specimens collected contained the leaves' 

 of one of the common trees. On breaking off the hollow 

 limb of a tree, at San Pedro, a specimen was found so tightly 

 wedged within that it could be secured only by cutting it 

 out with a small hand ax. They have the same habit as 



