26 
Psyche 
[Mar. 
third joint short, but a little longer than fourth, a high 
carina between bases of antennae. Mesonotmn coarsely 
punctate, enclosure broad and smooth, propodeum very 
coarsely punctate. First abdominal segment with nearly 
parallel sides, not one-half the width of hind margin of 
second segment, latter quite long as usual, sides rounded 
in to front, surface coarsely punctate, third segment 
about as broad as second, others shorter; pygidium fully 
one and one-half as long as broad, tip truncate and more 
than one-half of base, sides slightly curved ; ventral seg- 
ments without definite fringes. 
In fore wings, the third submarginal cell has an oblique 
base and sinuous tip, and is a little longer than broad, and 
beyond this cell the marginal cell tapers a little to tip. 
Length 10 mm. 
One male from Patagonia, Arizona, 20 August (Be- 
quaert). Type M.C.Z. no. 27620. 
Subgenus Apiratrix Shest. 
This subgenus is easily separated not only by the origi- 
nal character of a small basal raised area on the second 
ventrite, but also by the darker color of the stigma, brown 
to black against the yellow to ferruginous of the typical 
forms ; the lateral lobes reach the eye higher than in many 
of the true Cerceris , and in most of the species there is a 
mesosternal tubercle in the female. 
APIRATRIX FEMALES 
1. Propodeum and base of abdomen rufous; face with 
three pale spots, lateral lobes black; clypeus with 
a small median, pointed cone conifrons 
Propodeum and base of abdomen not rufous, no 
pointed cone on clypeus 2 
2. Front femora impressed on outer dark part when 
seen from above 3 
Front femora not impressed behind, convex; end of 
clypeus upraised a little, so with free, dark edge 4 
3. Clypeus plainly swollen above, but not quite in a 
cone; white of clypeus not nearly twice as broad 
as long ; apex of pygidium more than one-half its 
