Vol. XI] VAN DENBURGHSLEVIN— AMPHIBIANS AND REPTILES 55 



Mr. Slevin collected one (No. 46843) at San Bartolo, in the 

 Cape Region. It was found under a flake of granite pulled 

 off of a large boulder in the canyon bottom. This harmless 

 little lizard is much feared by the natives. They consider its 

 bite to be deadly, and believe that picking one up will cause 

 the skin to fall off the hand. The natives say that this gecko 

 is not common. Their name for it is Salamanquesa. 



10. Phyllodactylus unctus (Cope) 



Two specimens of this species were collected: one (No. 

 46844) at Agua Caliente under the bark of an old stump, and 

 the other (No. 46842) at Miraflores under the bark of the 

 Guamuchil, (Pithecolobium duke). The natives do not dis- 

 tinguish this from the larger P. tuberculosus, but on account 

 of its small size call it Salamanquesa chiquita. Like other 

 lizards of this genus it lives under the bark of trees and in the 

 thatched roofs of houses. 



12. Ctenosaura hemilopha Cope 



This is the largest lizard of the Cape Region and was col- 

 lected in the following localities : Vicinity of La Paz, San 

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

 tiago, Agua Caliente, San Jose del Cabo and Todos Santos. 

 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 Ctenosaura was found so tightly wedged within 

 that it could be secured only by cutting it out with a small 

 hand axe. They have the same habit as our Chuckwalla 

 (Sauromalus ater) of getting into crevices and holding tight 

 by puffing up the body. Large specimens are very rare, as the 

 natives kill them for food whenever they find one of desirable 



