HERPETOLOGY OF LOWER CALIFORNIA. II7 



are shorter than the distance from the axilla to the front 

 of the thigh, but those of the males are considerably 

 longer than this distance. The young of both sexes have 

 short tails. The color above is brownish, yellowish or 

 grayish, darker laterally. There is a large brown patch 

 on each side of the neck and a series of three more or 

 less distinct brown bars on each side of the back. These 

 bars are light bordered posteriorly. The tail is trans- 

 versely banded with brown. The belly is often dotted 

 or blotched with black or brown. All these markings are 

 more distinct in the young. The larger dorsal tubercles 

 are often tipped with orange-rufous, and those on each 

 side of the median line have seal brown or black keels. 

 The occipital spines are ribbed with very dark brown. 

 The temporals are yellow tinged with rufous. In very 

 young individuals the scales of the vertex are grayish or 

 yellowish white, with a few minute brown or black spots. 

 These spots, which are on the raised portions of the scales, 

 become more numerous as the animals increase in size, 

 until the whole crown appears black or dark brown 

 crossed by irregular lines formed by the yellow posterior 

 edges of the scales. 



Phrynosoma coronatum was first described from a speci- 

 men collected by Botta in "California." It has since been 

 recorded from Cape San Lucas, and La Paz. The speci- 

 mens enumerated below show that it ranges far north of 

 the limits of the "Cape Region." 



