36 
Psyche 
[March 
with me, relying on the evidence presented by Miss Ente- 
man (p. 43) where she speaks of the development of the 
pattern of P. pallipes; “In the dark variety of P. pallipes char- 
acteristic of New England, the early developmental stages, 
as studied in a great many specimens, are identical with 
those described for P. variatus. The only difference between 
the two species is that the typical P. variatus stops, so to 
speak, at an earlier stage than does P. pallipes , which ad- 
vances to the same melanic condition of P. variatus , and in 
most cases passes far beyond it.” 
If in this nest all are variations of one species, then we 
see that in the workers and males pigmentation stopped too 
soon and created the condition of P. variatus , while in the 
eight queens something queenly in their make-up “caused” 
advances to the extreme melanic condition which is taxo- 
nomically known as P. pallipes . 
