34 Trans. Acad. Sci. of St. Louis 
the temporal spine, in P. douglassi ornatissimum, and 
likewise a smaller opening between the occipital and 
temporal spines of P. douglassit hernandest. Other vari- 
able characteristics have been used to discriminate be- 
tween the two forms, such as coloration, number of 
spines on the body, and the occipital emargination. Cope 
(1900) attributed a deeper occipital emargination to 
P. douglassu ornatissimum, but found that the young 
present the form characteristic of P. douglassu hernan- 
dest. 
The occipital spines of Kansas specimens present great 
variation in their angle of rise from the horizontal plane. 
Some, with the occipital spines pointing backward, for 
example a specimen in the museum of the Kansas State 
Teachers’ College at Hays, are probably close to P. 
douglassu hernandesi, while others with the occipital 
spine in a vertical position are no doubt P. douglassu 
ornatissimum. Moreover, there are intermediates be- 
tween these extremes. Since no great differences are 
presented by the individuals in the series of Kansas 
specimens, it seems best to draw no complicated dis- 
tinctions, and to consider them all as P. douglassu orna- 
tissimum. 
Habitat and Habits —Little has been published about 
the habitat and habits of these lizards. They are in- 
sectivorous, and have been found to give birth to living 
young. 
Discussion of Kansas Reports—Since P. douglassit 
ornatissimum is evidently a rather rare Kansas lizard, 
a detailed discussion of its Kansas reports is given here. 
Doniphan County; Report given by Cragin (1881) as P. 
douglass, and later by Housholder (unpublished) as 
P, douglass hernandesi. Cragin’s specimen has’ been 
lost, and consequently his data are obscure, and Hous- 
