NO 1938. THE DIPTEROUS FAMILY PHORIDM—MALLOCH. 461 



third and fourth narrowly yellow, fifth and sixth brownish, second 

 scGjment elongate and dilated laterally, with several bristles on lateral 

 angles, ovipositor retracted, yellow; pleurae with a black spot behind 

 wing base, mid coxae with a black spot anteriorly and posteriorly; 

 legs yellow, apices of hind femora dusky, mid and hind tibiae distinctly 

 setulose on their postero-dorsal surfaces, 6 to 7 on basal half of mid 

 and 11 to 12 on hind tibiae from base to tip; wings with costa to 

 slightly beyond middle, first division equal to other two together, 

 third division about one-third the length of second, fringe long, the 

 bristles longer than fork of third vein, fourth vein curved at origin 

 rather beyond fork of third and running almost straight to near the 

 wing tip, seventh vein distinct, halteres clear yellow. 



Length, 3^-4 mm. 



There were quite a number of specimens standing as this species in 

 the collection, but all that I can find to agree with the description 

 are five from Mount Washington, four of which did duty as scalaris 

 Loew and one of which is labeled "Phora nigriceps, Lw." There is 

 another specimen from Mount Katahdin, Maine, summit 5,215 feet, 

 August, 1902. No collector's name. I have also seen it from 

 Massachusetts and Rhode Island (Johnson). On the testimony of 

 Coquillett, Brues accepted aletise Comstock as a synonym of this 

 species in his paper already quoted, but there is a good distinction 

 between these species, and the series in the collection that stood as 

 nigriceps was principall}'' aletise, Comstock. 



APHIOCH^aSTA WINNEMANA, new species. 



Female. — Yellow; frons black, anterior post-antennal bristles 

 extremely small, antennas yellow, arista dark, short, not longer than 

 frons, thick, indistinctly pubescent; dorsum of thorax dark reddish 

 yellow, paler at sides, pleurae and coxae immaculate, anterior pair of 

 scutellar bristles about one-half the size of posterior pair; abdomen 

 yellow, second segment but little longer than third, lateral bristles 

 present, segments 2-4 broadly banded with black posteriorly, sixth 

 centrally and apically yellow, ovipositor extruded, blackish bro^vn; 

 legs yellow, apices of hind femora broadly brown, mid tibiae without 

 distinct setulae, those on apical three-fifths of hind tibias (7-8) large 

 and distinct; wings much as in nigriceps, but the fringe is compara- 

 tively longer and the costa reaches distinctly beyond the middle of 

 the wing; halteres yellow. 



Length, 2 mm. 



Very similar to nigriceps Loew, but the points mentioned in the 

 description should serve to distinguish them. 



One female, Plummers Island, Maryland (H. S. Barber). 



Type.— Cat. No. 14848, U.S.N.M. 



