TEIID LIZAEDS OF THE GENUS CNEMIDOPHORUS 



235 



A total of 4J:0 specimens of C. hyperythrus hyperythfus, besides 

 those discussed above, have been measured. For the sake of con- 

 vonient'o in showin*; the futility of roc()<riiizin^ those from the cape 

 district and the southern part of the central district (290 specimens), 

 which were hitherto considered as the true hypei^ithras^ as distinct 

 from those from southern California and tlie northei-n part of Lower 

 California (159 specimens), which have been hitherto recognized as 

 " beldhiffi,'^ the data are divided into two parts, constituting a 

 " southern section " and a " northern section." 



The following table has been prepared to show the variation in 

 the number of supraoculars and the position of the supraocular 

 granules in specimens from the two regions. It shows that it is im- 

 possible to draAv a distinction between the two populations on these 

 characters. 



Tahlc shoiriiit/ the vuriniion in llir iiKinhcr of sui>r(tociil(irs iiml the itosition of 

 the supraocular granules Ut C. hyperythrus hypcrythrus 



• Abbreviations used to represent the forward extent of the supraocular granules in the various specimens 

 areas follows: pt., part; pt. 4, to the middle of the fourth supraocular; 4, to the anterior border of the fourth 

 supraocular; pt. 3, to the middle of the third supraocular; 3, to the anterior border of the third supraocular; 

 and pt. 2, to the middle of the second supraocular. 



Van Denburgh (1922) says that " F. hyperythra hyperythra has 

 three or two dorsal lines; F. hyperythra heldingi normally two, 

 rarely three or one." This distinction has led to the counting of the 

 dorsal stripes on all specimens examined, and the data secured may 

 be summarized by the following table : 



Table showing the variation in the number of dorsal stripes of C. hyjperythrus 



hyperythrus 



