1916.] NATURAL SCIENCES OF PHILADELPHIA. 533 



brown. 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 R i+i . Venation: 

 L's moderate in length, somewhat angulated at its origin; R 2 ^ about 

 equal to or a little shorter than that portion of R 2 before the radial 

 cross-vein; r at the tip of Ri) basal deflection of Ciii under the middle 



of cell Is! M 2 . 



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, d\ 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 7 in color, the mesonotum darker brown, the pleura 

 light gray, the tips of the femora and tibise dark brown, wings with 

 a more yellowish tinge, especially near the costa, R 2 +z much shorter 

 than that portion of R 2 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 with dark 

 stripes on the praescutum. 



Male. — Length, 7.2 mm.; wing, 8 mm.; antenna? about 5 mm. 



Rostrum dull yellow, the palpi brownish black. Antennas dark 

 brown, the flagellar segments greatly elongated with outspreading 

 pubescence. Head dark brownish black with a sparse grayish 

 bloom. 



Thorax brownish yellow, the praescutum with three broad, dark 

 brown stripes, the middle one broadest, confluent behind with the 

 short lateral stripes; scutum, scutellum and postnotum dark brown. 

 Pleura brownish 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 brown; veins dark brown. Vena- 

 tion (Plate XXVII, fig. 45): Rs elongate, in a line with R 2+3 ; R 2+3 

 longer than the basal deflection of Cui\ cross-vein r at the fork of 

 R 2+3 ; cell 3/i lacking. 



Abdomen dark brown, the hypopygium more yellowish. 



Habitat. — Northeastern United States. 



