Malloch — Some Undesrrihed N^ortJi American Sapromyzhhe. ■ 
Froiis distinctly nurrowcd iinteriorly, :it its narrowest part about one- 
seventh the width of head; frontal hairs neither long nor nunierons; 
antennae reaching to epistoine, third joint almost parallel-sided, the apex 
slightly rounded, its length about times its greatest width; a])ical 
doi’sal bristle on second joint distinct and rather long, its length ecpial to 
breadth of third anhmnal joint; cheek linear, the marginal bristles 
rather numerous, upturned anteriorly, and arranged in an irregnhu’row ; 
palpi slightly broadened, with scattered hairs on surface, d'lu; mesono- 
tum has tlu' hristling as in polita hut the hairs on disc are very closely 
placed and their length is about equal to that of the dorsal hair on second 
antennal joint or slightly longer. Abdomen very short and broad, not 
(‘xceeding in length that of the thorax, broad to apex of fourth segment, 
the lifth rather abruptly tapering; surface of all st'gnumts with nunuM’ous 
hairs; the ventral, })rotuherant portions of the hypopygium are yellowish. 
Legs rather strong; fore femora with strong ventral bristles, mid femora 
more weakly bristled, the bristles strongest on the j)OStero-ventral sni'- 
faces; hind femora bare on both the antero- and posh'ro-ventral surfaces, 
all legs with short surface hairs. Outer cross vein of wing slightly waived ; 
third vein at its api'x slightly upeurved; otherwise the wing venation is 
sinular to that of jiolita. Length, 5 mm. 
Localiti/. — Llummers Island, ^Maryland, A])ril 21, 11)12 ( \V. L. IMc.Vtee), 
one specimen. 
This species ditl'ers from polita Say, which it most closely resembk's, 
in having the hind femora bare on the antero-ventral surface, excei)t for 
some very short setulae at near apex; the broader third antennal joint; 
the slightly sinuous outer cross vein and the more robust build of the 
insect over all. 
There are 2 females in the Illinois State Laboratory of Natural History 
collection ivhich I coiisider belong to this species. 
These dilfer from the male only in having the eyes mnch more widely 
separated, at the anterior, or lower margin; the width of frons is about 
(‘(pud to two-thirds that of either eye at same part; the ha.«e and almost 
the entire under surface of third antennal joint is'yellowish ; and the wings 
are distinctly yellowish, with all the veins deep yellow. 
The type specimens of icinnemanae and nndifemorata are in the collec¬ 
tion of W. L. McAtee and the allotypes are in the collection of the Illi¬ 
nois State Laboratory of Natural History. 
Lonchaea albiceps sp. nov. 
Female .—(ilossy black, with but slight iudicatious of a bluish ting(‘, 
except on the frons which is distinctly bluish when viewed from above and 
behind. The face and its sides, wlu'u view'ed from alxn’e, with very dis¬ 
tinct white pollinosity; antennae black, arista concolorous; proboscis and 
pal))i black. Legs black, basal tarsal joint on all legs yellowish, the re¬ 
mainder of tarsi blackened. Squamae black-browu, fringe concolorous. 
Halteres black. Wings very slightly grayish, veins yellowish brown. 
Frons one-third as wide as head, slightly wider at above antennae than 
