1916.1 NATURAL SCIENCES OF PHILADELPHIA. 
533 
browii. Wings subhyaline, costal region more yellowish; apex of 
the wing broadly but indistinctly darkened; stigma prominent, dark 
brown; a pale brown seam on the deflection of i?4+5. Venation: 
Rs moderate in length, somewhat angulated at its origin; R2+3 about 
equal to or a little shorter than that portion of R2 before the radial 
cross-vein; r at the tip of i^i) basal deflection of Cui under the middle 
of cell 1st M2. 
Abdominal tergites dull yellow, unmarked; sternites a little lighter 
yellow, the eighth segment and the caudal portions of the seventh a 
little more brownish. 
Habitat. — Western United States. 
Holotype, cf, Marin County, California (Coll. Hy. Edwards, 
No. 814). 
Type in the collection of the American Museum of Natural History. 
Related to flavipila Doane which has the hairs on the head longer 
and light yellow in color, the mesonotum darker browm, the pleura 
light gray, the tips of the femora and tibiae dark brown, wings with 
a more yellowish tinge, especially near the costa, R2+3 much shorter 
than that portion of R2 before the radial cross-vein. In flavipila 
the head and first antennal segment are light gray, not brown as 
described by Doane. 
Limnophila edwardi sp. n. 
Antennae elongated; cell Mi of the wings absent; thorax vnth. dark 
stripes on the prsescutum. 
Ma?e.— Length, 7.2 mm.; wing, 8 mm.; antennae about 5 mm. 
Rostrum dull yellow, the palpi brownish black. Antennae dark 
brown, the flagellar segments greatly elongated with, outspreading 
pubescence. Head dark brownish black with a sparse grayish 
bloom. 
Thorax bro^vnish yellow, the praescutum with three broad, dark 
brow^n stripes, the middle one broadest, confluent behind \nth the 
short lateral stripes; scutum, scutellum and postnotum dark brown. 
Pleura bro^vnish yellow. Halteres pale, the knobs darker, brown. 
Legs with the coxae, trochanters and bases of the femora dull yellow; 
remainder of the legs dark brown. Wings with a faint brownish 
tinge; stigma elongate-oval, dark browTi; veins dark brown. Vena- 
tion (Plate XXVII, fig. 45): Rs elongate, in a line with ^^2+3; -K2+3 
longer than the basal deflection of Cui; cross-vein r at the fork of 
Ri+i] cell Ml lacking. 
Abdomen dark brown, the hypopygium more yellowish. 
i7a&i7aL— Northeastern United States. 
