Occasional Papers of the Museum of Zoology 23 



consists of insects, as shown by the examination of stomachs. 

 Females collected on July 4 contained large eggs apparently 

 about ready to be laid, while those taken on July it and subse- 

 quently had none. 



Phrynosoina hcrnandesi Girard, variety. 



Thirty specimens taken in Maggie Basin at Carlin and near 

 James Creek. 



The Nevada specimens differ from Utah (Green River) 

 specimens in having larger spines, both on head and body, and 

 a flatter temporal region. As these characters are constant in 

 the series of thirty obtained, the Nevada specimens may repre- 

 sent a distinct race. Our material is not sufficient for a deter- 

 mination of this point. 



The size is large. The length of the largest specimens is 112 

 to 128 mm., of which the tail constitutes 29.9-31-4%, average 

 30.9%, in eleven females, and 37.1-39.2%, average 37.6% in 

 three males. The femoral pores vary from 13-18 with an aver- 

 age of 15 in thirty specimens. 



The coloration of the adults is as follows. The ground 

 color varies from pale gray to a dull yellow, the smaller speci- 

 mens (100 mm.) being more generally gray, while the larger 

 ones are more yellow or brown. The black spots are distinct 

 and margined rather definitely behind, and indistinctly in front 

 with pale yellow. Specimens 100 mm. or more in length 

 exhibit a varying amount of red. This first appears as a 

 broken line above and below the peripheral spines, and on the 

 lips. In the largest individuals it is spread over the back, tail 

 and limbs as irregular reticulations, suffuses the temporal re- 

 gion and temporal horns, but seldom the occipital horns, and 

 often occurs on the gular region and throat and as spots on the 

 bases of the abdominal scales. The ventral surfaces are pale yel- 

 low with black spots, the latter varying from only a few on the 



