[February 1885. BULLETIN BROOKLYN ENTOM. SOC. VOL. VII. 135 
~ D.—Sixth abdominal segment of the male as long as the two preceding to- 
gether, but narrower, somewhat tubular, unsymmetrical: on underside 
of the seventh segment with two long, linear, sub-parallel appendages. 
arcuate, bidenticulate at the end, imbedded in grooves when at rest. In 
the female the fifth segment half as long as the preceding. Scutellum 
much raised, exposing metanotum...... eu tok se . Eupeodes, OS: 
DD.—Hypopygium without slender appendages, sixth segment of male not 
peculiar; fifth segment of female one third or one fourth as long as pre- 
ceding segment. 
#.— Third longitudinal vein with a distinct curvature into the first posterior 
cell; third joint of the antennze elongate-oval.......... Didea, Macq. 
HE.—Vhird longitudinal vein straight or gently curved; third joint of an- 
tenmeeshontovalls<, yosss = soe ee eee SOR ertete Syrphus, Fabr. 
ASCINAE. 
Small, slender, elongate, thinly pilose species, with more or less 
yellow markings on head and abdomen. Antennze short, epistoma pro- 
duced; marginal cell of the wings open, third longitudinal vein straight 
or gently curved, anterior cross-vein near the base of the discal cell and 
rectangular, abdomen contracted towards the base, the greatest width 
beyond the middle, in outline club-shaped or spatulate; hind femora 
thickened. . 
B.—Epistoma produced anteriorly, in profile deeply concave from antennz to 
tip; third jomt of antennze nearly orbicular............... -Sphegsina, Meig. 
BB.—¥pistoma produced more downward, in profile slightly concave from anten- 
HL EMAL OULD Pays nap eee ch ssn cte ce Ce oi ove SE Me EMR acu ciralign seed eran Se Ascia, Meig. 
BRACHYOPINAE, 
Moderate sized, nearly bare species, chiefly or wholly reddish or 
luteous; or, ifin large part black, without light yellow markings. Antennze 
short, abdomen not club-shaped; anterior cross-vein before middle of the 
discal cell, marginal cell wide open. 
A,-—Epistoma produced into along slender porrected snout; femora slender; the 
third longitudinal vein joins the costa beyond the tip........ Rhingia, Scopoli. 
‘AA,.—Face not so produced, hind femora more or less thickened. 
eS hacewcaninate abdomen Oval. » \ Sees eh ee Brachyopa, Meig. 
£6.—Face produced, obtusely tuberculate, thorax with bristles, abdomen elongate 
Eugeniomyia, Will. 
VOLUCELLIN AE, 
Mostly large species, uniform in color or variable. Third joint of 
the antennz more or less elongate, the arista always pilose; eyes usually 
pilose; body nearly bare or thickly pilose; abdomen short, thick, strongly 
convex above; legs slender, marginal cell of the wings closed and petio- 
