64 
CHARLES ROBERTSON. 
spot on mandibles, and on anterior and middle knees, yellow ; flagellum testa- 
ceous beneath, anterior tibise with more or less of rufous in front. Length 
8 — 9 mm. 
Twenty-four males and two female specimens. I have taken it 
June 21st to 26th, on flowers of Steironema lanceolatvm, Apocynum 
cannabinnm and Ceanotkns americamis. 
The posterior tibite of male are unarmed, except a short blunt 
process between the spurs. 
FHILEREillUS. 
P. illiiioieiisi^ 9 . — Black, closely and strongly punctured ; middle of face, 
cheeks, sides of prothorax, pleurte, sides of metathorax, two short lines on an- 
terior middle of mesothorax, and line encircling scutellum with short, white, 
feathery, or scale-like pubescence; head not broader than thorax, clypeus at 
apex, sometimes, and mandibles ferruginous ; autennm dull ferruginous, flagellum 
paler beneath; scutellum slightly bilobed ; legs inclining to dull ferruginous, 
especially at the joints, clothed with short pale glittering hairs; wings hyaline, 
faintly clouded at apex and in marginal cell, nervures fuscous; second submar- 
ginal not greatly shorter than first, narrowed about one half towards marginal, 
receiving the second recurrent nervure near its apex, first submarginal receiving 
the first recurrent near its apex; tegulse pale testaceous exteriorly ; abdomen 
fulvo-ferruginous, depressed apical margins of segments golden, sometimes the 
disc is more or less blackish, densely and confluently punctured, segments 2-4 
depressed at base, 1-4 with interrupted basal fasciae of short white hairs, on first 
forming rounded patches, segments 2-4 with patches of pubescence on each ex- 
treme side of apical margin, fifth segment depressed laterally, elevated on the 
disc, the elevated portion and the apex clothed with white pubescence. Length 
.5 mm. 
% . — Resembles the female, antennae blacker, flagellum paler beneath, apical 
margins of fifth and sixth segments with fasciae of white pubescence. Length 
4 — 5 mm. 
The segments of the abdomen are eommonly ferruginous, with 
golden apical margins and a little black on the disc. Often the 
black is wanting. In one male specimen the segments are entirely 
black, except the golden apical margins. 
Three females, nine males, taken August 14th and 23d, on flowers 
of Lespedeza procumbem. 
1IERI4DEK. 
II. pliilsKlelplii 9 - — Black, form slender, closely and finely punctured; 
head broader than thorax, long ; clypeus short, labrum long, somewhat surpassing 
the open mandibles, its sides parallel, apex three toothed, the middle tooth longer 
and strongly elevated, mandibles long and narrow; ])leura with a little thin, 
pale pubescence, enclosure of metathorax crescentic, rough ; wings hyaline, faintly 
clouded at apex and in the submargiual cell, stigma black, nervures and tegnlse 
