156 
Psyche 
[September 
Fig. 1. Head width plotted against head length in the two forms of Cephal- 
onomia perpusilla males. 
of propodeum ; ocelli present but small and weakly convex. Coloration 
as in micropterous female, head and thoracic dorsum polished and only 
very obscurely alutaceous. Sides of head subparallel except weakly 
converging anteriorly and posteriorly, eyes rather flat, not notably 
protruding from surface of head; eyes very small, weakly hairy, 
removed from base of mandible by .7 X their own height, removed 
from vertex crest by nearly twice their own height; minimum width 
of front 1.7 X eye height. Scutellum weakly separated from mesoscu- 
tum, with a very thin basal transverse groove. 
Subapterous females occur only in Zones B and C (Table I). The 
one unusually large specimen (Fig. 2) is from Marin Co., Calif., 
but other relatively small specimens occur in this same sample. The 
smallest specimen is from Rustler Park, Ariz. The two females from 
Douglas Co., Oregon, are exceptional in having the head width/ 
