The Inzards of Kansas 33 
in regular series, diagonally and transversely; both 
sexes with femoral pores; tail of female shorter than 
that of the male. ; 
Coloration variable; dorsal color pale cinnamon 
rufous, yellowish, olivaceous, pinkish, brownish, or gray, 
and with uneven blotches of darker and lighter hues; 
tail colored like body; lower surface usually white or 
pale green, but sometimes greenish or olivaceous; head 
spines reddish to pale yellowish. 
The study of variation has been made upon 36 Kansas 
specimens of this subspecies, twenty-two of which were 
small in size. A summary of the data is given below: 
Length of body, 20-91; length of tail, 9-40; total length, 
31-131; width of head, 6-24; length of tail as percentage 
of total length, 24.3-37.1; width of head as percentage 
of body length, 21.4-30.0. 
As far as observed, the measurements of other 
workers all fall within the ranges set by the above list- 
ing. 
In addition to the two horned lizards discussed above 
P. brevirostre and P. douglassii hernandesi have been 
reported from Kansas, so it is necessary to consider them 
here, 
The occurrence of P. brevirostre in Kansas has been 
regarded as very unlikely by Burt (1927). 
Through the work of Cope (1900, pp. 414-415), P. 
douglassti hernandesi was definitely reported from Kan- 
sas. After carefully comparing specimens of P. doug- 
lassit hernandesi and P. douglassii ornatissemum from 
various points the writer has come to the conclusion 
that they may be synonyms and plans to make a care- 
ful study of their status later. The points upon which 
the two subspecies are presumably separated are @ 
more nearly vertical occipital spine, as compared with 
