E. T. CRESSON, JR. 
43 
Illinois: Havana, Thompson’s Lake, IX, 1, 1910, (Sandy beach), 1 9, [HI.]. 
Missouri: Columbia, V, 26 to VI, 8, 1906, (C. R. Crosby), 1 cT, [Corn, U.], 
Variations. — The female from Cape May, New Jersey, has the 
third antennal joint black and the mesonotum distinctly vittate. 
Xotiphila nudipes new species 
?1862. Noiiplnla bella Loew, Mon. Dipt. N. Am., i, 13.5. 
This species has lioth sexes peculiar in that the legs are nearly 
destitute of, or with very poorly developed, bristles. The species 
is also distinctive in the general cinereous tinge overcasting the 
entire insect, excepting, of course, the brown markings and the 
facial color. 
It is separated from vittata by the undeveloped leg bristles, 
stouter femora and more triangularly shapetl head in the male. 
The leg bristles are reduced to setulae, which are evenly developed 
over all surfaces, not longer in certain places than in others. 
Description. — Black; palpi, sometimes third antennal joint except apical 
margin, halteres, apices of femora, broad bases and narrow apices of tibiae and 
tarsi, tawny or yellow; tarsal fascicle pale. 
Opaque, olive gray pruinose. Frons blackish, with median area and espe- 
cially orbits lighter. Face yellow. Mesonotum rarely vittate medianly, but 
with broad lateral stripe, including presutural and supra-alar liristles, and an- 
other intra-alar stripe continuous on lateral scutellar margins, brown; meso- 
pleura sometimes with stripe above. Abdomen of male with a pair of large, 
brown triangles on segments three to five, attaining apical margins of seg- 
ments medianly, and attenuating laterally; of female with emarginated basal 
bands dilating medianly; second segment with two to four rounded, isolated 
spots. 
Frons subhorizontal, well protruding at antennae, flattened, longer than 
broad; orbits parallel. Face as broad as frons, in profile straight and retreat- 
ing; Carina more prominent than orbits; bristles weak. Cheeks hardly as 
broad as length of third antennal joint; lower occiput very conspicuous. 
Spine of second antennal joint minute; third, broad apically; arista with 
seven to eight hairs. Scutellum broadly truncate, flat. Abdomen elongate, 
cylindrical, arcuate, sunken on dorsum of segments two to four; lateral margins 
rounded; segment five subconical, broadly truncated, much longer than four. 
Legs stout, all bristles reduced to setulae or are wanting; middle femora 
of male sulcate, ciha very short, erect on their tibiae. Length. — 3 to 4 mm. 
Holotype. — cT ; Woodbury, New Jersey, VI, 7. 1896, (C. W. 
Johnson), [A. N. S. P. No. 6110]. Paratypes. — 2 cf ; topotypical. 
Specimens Examined. — 5 6^,3 9. 
New Jersey: Manahawkin, V, 30, 1910, (H. S. Ilarbeck), 3 9, [Harbeck]. 
Woodbury, VI, 7, 1897, (C. W. Johnson), 3 cf, [A. N. S. P. and II. N. M.]. 
Ohio: Akron, VI, 23, 3 cf, [Ohio]. 
TRANS. AM. ENT. SOC., XLIII. 
