TEIID LIZARDS OF THE GENUS CNEMIDOPHORUS 71 



the middle of the second supraocuhir in 74 specimens, and to the 

 anterior border of the second supraocular in ei4 specimens. 



Variation. — Gadow ( 190(), p. ;W()) reported upon Gl specimens of 

 the i^resent species. He found that the " supraoculars Avere normally 

 three, but that there are 12-14 percent exceptions." Calculations 

 from the Avriter's data on the 300 specimens discussed above, show 

 less tluin G per cent e.\c(>ptions. 



100 90 



FiGUitE 10. — -Map siiowinc i.hcalitv kecohds (state hki'uktsi ixn; CXKMiDoriiuuus 



GCTTATDS 



Gadow (p. 283) examined the dorsal granules of a series of 

 </uttati(8 from Aqua Fria and found that they vary in numlier fi'om 

 100 to 180 across the back. 



Peters (18T1, p. 399) wrote that the type specimen has the fi'ontal 

 shield transversely divided behind. This condition is normal in 

 Anieiva hifrontata hifrontata and its allies from northern South 

 America, but is Avholly abnormal in giUtatus. 



Aside from the tendency for the adults of the Mexican race-runner 

 to possess a spotted pattern in Eastern Mexico, and to possess a 

 striped pattern in Western Mexico, as discussed in the systematic 

 notes, little geographical variation is evident. 



