464 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 43. 



Easily separated from its allies by the large fleshy proboscis of the 

 female, but the male may not be so easily recognized, as that organ 

 is very probably of normal size and retracted in that sex. Like the 

 next species the male will very probably have the scutellar bristles 

 more unequal. A female from Delaware Water Gap, New Jersey 

 (C. W. Johnson), has the proboscis less prominent, but agrees in 

 other respects with those from Plummers Island. One female, 

 Hyattsville, Maryland, September 1, 1912 (Malloch and Knab). 



APfflOCH.ffi;TA IN.s;qUALIS, new species. 



Male and female. — Yellow; frons black, gray dusted, lower post- 

 antemial bristles in male nearly as large as upper pair, in female 

 much smaller; antennae brown, arista yellow at base, almost bare, 

 palpi yellow, normal; thorax yellow, darker in male, anterior scutellar 

 bristles very small and weak in male, but about three-fourths as large 

 as the posterior pair in female, abdomen black, with narrow, yellow 

 hind-marginal bands, that on sixth segment more distinct in female, 

 first, fifth, and sixth segments nearly all yellow, merely laterally 

 infuscated in male, second segment very slightly elongated and 

 with several lateral, weak, but distinct bristles, male hypopygium 

 large, yellowish brown, the anal protuberance long and yellow, with 

 2 very slender long terminal hairs, female ovipositor yellow; wings 

 grayish, veins brown, costa to middle of wing, first division about 

 twice as long as second, third vein thicker than costal vein, fringe 

 long and thick; legs yellow, hind femora dusky at apices and with a 

 series of longish, black, ciu"led hairs on basal half of ventral surface, 

 hind tibiae darkened at apex posteriorly, setulse on basal half weak, 

 but the 5-6 on apical half strong and nearly equal in size; halteres 

 yellow. 



Length, 2-3 mm. 



A pair from Ithaca, New York (O. A. Johannsen), and one female 

 from Fieldbrook, California, May 29, 1904 (H. S. Barber), that evi- 

 dently belongs to the same species. I have also seen three females 

 from Hanover, New Hampshire (Johnson). 



Type-locality, — Ithaca. 



Except that the lower post-antennal bristles are very small, almost 

 imperceptible, I can see no difference that would cause m© to separate 

 the Californian specimen from the type. 



Type.—Csit. No. 14852, U.S.N.M. 



APHIOCHJETA MACROCH.ffiTA, new species. 



Female. — ^Yellow; frons yellow, bristles strong, post-antennal 

 bristles of nearly equal size, strong, upper pair widely placed; antennas 

 yellow, arista distinctly pubescent, longer than frons, palpi yellow, 

 strongly bristled; thorax yellow, anterior pair of scutellar bristles 

 very weak, hardly more than weak hairs; mesopleurae with one strong, 



