2 Trans. Acad. Sct. of St. Louis 
Over 1,700 specimens of Kansas lizards have been ex- 
amined by the writer during the progress of this study. 
These have been taken from 83 of the 105 counties of the 
state. Correspondence with many Kansas persons has 
yielded a large reward of specimens, and in addition the 
author has personally collected 275 Kansas lizards, in- 
cluding representatives of ten species and subspecies, 
many of which are from hitherto unworked areas. 
Good discussions of collecting and preserving methods, 
which have been found useful, are given by Stejneger 
(1891), Ruthven (1912), and Loding (1922). 
Reports of lizards, whether in the literature or not, 
have always been considered, but have not been accepted 
unless the specimens are in existence and the data of col- 
lection are thought to be without the possibility of error. 
The taxonomy used is after Stejneger and Barbour 
(1923) unless otherwise stated. The literature has been 
consulted extensively for descriptions of Kansas lizards, 
and these have been checked, and at times modified, with 
the aid of specimens. Thus, the descriptions presented 
in this paper are the summary of data taken directly 
from Kansas material. 
The study of variation has included the taking of 
measurements on all available specimens, and units of 
the metric system have been used for their expression. 
Important characteristics of the individual species, such 
as the interorbital scutellation of Crotaphytus collaris, 
or the barring on the sides of Holbrookia maculata ma- 
culata, have also been given considerable attention. 
This work was done at the suggestion and under the 
general direction of Dr. Minna E. Jewell of the Kansas 
State Agricultural College, to whom the writer wishes 
to express his grateful appreciation for many helpful 
suggestions and criticisms. Thanks are extended par- 
