1 8 University of Michigan 



of the Sceloporiis biseriatns and Uta stanshnriana nevadensis, 

 but are usually found upon the tops of rocks or clinging to 

 sloping rock faces and not on cliffs. When alarmed they rush 

 down into the crevices. The stomach of one specimen con- 

 tains only insects and spiders ; another contains insects and 

 some vegetable matter, the latter probably taken accidentally. 



Uta stanshnriana nei'adensis Ruthven. 



Thirty-four specimens taken in the Cortez Range at the 

 Humboldt Valley and twenty in Moleen Canyon. 



The specimens have been fully described by Ruthven.*' 



After a careful study of the forms of Uta stanshnriana, 

 Richardson' has concluded that the specimens from the north- 

 ern part of the Great Basin are subspecifically distinct from 

 those from the desert regions of the southwest, but retains the 

 name U. stanshnriana for the northern form and gives to 

 the southern variety the name of U. stanshnriana elegans 

 (Yarrow), thus making U. s. nevadensis a synonym of U. 

 stoMshnriana. From Richardson's investigations it seems not 

 improbable that the species was described from the northern 

 form, but until this has been determined by an examination of 

 specimens from the type locality we feel justified in distinguish- 

 ing the specimens from Maggie Basin as U. s. nevadensis. 



This lizard was not common in the Cortez Range but in 

 Moleen Canyon it occurred in some numbers. It was closely 

 confined to the vicinity of rocks. Occasional specimens were 

 found on the ground, but the majority were on the large rocks 

 along the cliffs, upon which it climbs with all the facility of 

 Sceloporus hiseriatns. The stomach contents of two specimens 

 are made up of insects and spiders. Females taken on July 6 



fProc. Biol. Soc. Wash., Vol. XXVI, 27-30. 



'Richardson, C. H., Reptiles of Northwestern Nevada and Adjacent Territory. 

 Proc. U. S. Nat. Mus., Vol. 48, 403-435. 



