1912] Eastern Species of Cerceris 21 
with a spot each side, yellow. Interantennal ridge black, scape yellow, 
black line above, first and second joints of flagellum partly rufous; 
wings dark, darker on costal apex, stigma yellow; venter black; legs 
pale, coxze wholly and femora partly black, hind tibia dusky at tip, 
hind tarsi dusky. Body densely and quite coarsely punctate, venter 
nearly smooth. Clypeal process a little broader than long, emarginate 
in front; clypeus below the process shows a ridge each side; second 
joint of flagellum much longer than third; lateral ocelli plainly nearer 
to each other than to the eyes; enclosure coarsely transversely rugose; 
abdomen quite broad, the segments not much narrowed at base, the 
basal segment much broader than long; pygidial area a little more than 
twice as broad as long, sides sub-parallel; six or seven spines on hind 
tibiae, sub-equally spaced. One specimen shows a small spot each side 
on basal segment of abdomen. 
o Similar to female, face all yellow, large metanotal spots, small 
spot each side on basal segment, last segment more plainly banded than 
in female. Clypeus with three blunt, black teeth below on middle; 
hair-lobes about one and a half their breadth apart; last joint oi 
antenne not as long as preceding, curved, and tapering; enclosure with 
oblique strize on lateral angles, elsewhere transversely rugose; abdomen 
rather broad, segments but little constricted at base; pygidial area 
hardly twice as long as broad, sides parallel, apex truncate, surface 
coarsely punctate. Legs with front and middle femora largely black, 
hind femora with large black spot, but the base pale, hind tibia blackish 
each side near tip, tarsi blackish. 
Length 9 11mm. o& 10mm. 
From Glencarlyn, Va., 23 June (Ceanothus), and Falls 
Church. Vas 30) july. 
Cerceris psamathe n. sp. 
2 Black; basal half of mandibles, spot above base of mandibles, 
clypeal process above, spot each side on face, interantennal carina, dot 
behind eye, two spots on pronotum, tegulee, post-scutellum, stripes on 
metanotum, two spots on basal segment, rather broad and broadly 
emarginate bands on other segments, yellow; band on second segment 
not much broader than others; legs mostly yellow or rufous, anterior 
and middle femora black at base, spot near tip of hind tibia, and tarsi 
dusky; antennz blackish above, except at tip. Body very finely 
punctate (not near as coarse as in C. nigrescens), clypeus as figured; 
enclosure large, finely striate; basal segment of abdomen scarcely one- 
half the width of second segment; pygidial area long, plainly constricted 
near tip. 
Length 11 mm. 
From Lee County, Texas, (Birkmann). C. convergens 
Vier. & Ckll., from New Mexico has a similar pygidial area, 
but is said to be coarsely punctate, with spots on scutellum, ete. 
The description of C. novomexicana agrees very well, except the 
constriction of pygidial area is not mentioned. 
