20 Annals Entomological Society of America [Vol. V, 
Cerceris firma Cress. 
I have seen only the types, these (females) have a small 
almost acutely pointed depressed clypeal process, partly 
obscured by hair; it is shown in the figure. 
Cerceris imitatoria Schlett. 
Specimens from Falls Church, Va., in June, I have placed 
doubtfully as this species, which in nearly all structures seems 
almost identical with C. clypeata. 
Cerceris nigrescens Smith. 
From Ithaca, IN: Y., and’ Southern “Pines, IN. VCarY sige 
pygidial area of the female is figured. The male has not been 
described, so the following is given: 
o& Black, basal part of mandibles, face, two spots on pronotum, 
tegulz, post-scutellum, a small spot each side on the metanotum, two 
spots on basal segment, bands on following segments, all broader on 
sides, pale yellowish. Venter black, second, third and fourth segments 
with pale bands; legs pale yellowish, front and mid femora more or less 
black, mostly behind, hind femora with black apical spot, also on hind 
tibia, hind tarsi dusky. Scape of antennze yellow, black above, flagel- 
lum more or less fulvous beneath. Wings nearly hyaline, dark on 
costal apex, stigma yellow. Face and rest of body very finely punctate, 
vertex more coarsely punctate; second joint of flagellum short, but 
little longer than the third, apical joint smaller than the preceding 
joint, curved; lateral ocelli nearer to each other than to eyes; clypeus 
rounded below, with three blunt, black teeth; hair-lobes three times 
their breadth apart; enclosure rather broad, striate; pygidial area 
small, two and one-eighth times as long as broad, tip faintly rounded; 
about five or six spines on hind tibia. 
Length 8.5 mm. to 10 mm. 
From Ithaca, N. Y., and Southern Pines, N. Car.,(Manee). 
Mr. Rohwer has informed me that the type of Smith has 
the clypeal process truncate, and differs somewhat in other 
points; however this is the C. nigrescens of Cresson and Packard, 
and so I leave it until it is shown that there is another species 
more closely agreeing with the type, or the limits of variation 
in the shape of the clypeal process are better known than at 
present. 
Cerceris clymene n. sp. 
@ Black; base of mandibles, spot above their base, sides of face, 
upper surface (except tip) of clypeal process, dot behind eye, two spots 
on pronotum, tegule, post-scutellum, a broad band on second segment 
of abdomen, a narrow line on each of next two segments, and the fifth 
