The Lizards of Kansas 11 
to restrict its range from that area. Neither the large 
chalk beds of Trego and Gove counties, nor the great 
sandy areas of the state, as those in Reno and Stafford 
counties, have yielded specimens of the collared lizard. 
Northeastern Kansas apparently does not present favor- 
able geological conditions for its dispersal, and too, it is 
Fig. 1. Distribution of C. collaris in Kansas as indicated by the county 
reports. 
an area characterized by a dense agricultural popula- 
tion. 
Holbrookia maculata maculata. (Girard). 
Holbrook’s Sand Swift, Spotted Lizard, 
Cactus Lizard. 
Description—Head broad and short, convex; widest 
in orbital region; muzzle broad and rounded; neck thick; 
body rather stout and depressed with tail tapering rap- 
idly to a point; tail thick at its base; ear opening ab- 
sent; six oblique and imbricate upper labials; strong 
superciliary ridge above eye; supraocular region not 
elevated above superciliary ridge; head scales moder- 
ately tuberculate; dorsal scales small, finely granular, 
