498 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.43. 



antenna! joint oval, slightly more elongate than usual, with a long 

 almost entirely bare arista, palpi clear yellow, normal size, with 

 numerous but small bristles; thorax subshining, very much more 

 distinctly punctuate than usual, thinly hairy; abdomen opaque, the 

 segments gradually decreasing in length, the second not elongated 

 and without lateral tufts of bristles, entire abdomen with sparse, 

 short, bristly hairs; legs slender, brownish testaceous, the four pos- 

 terior coxse and hind femora more or less infuscated, tibiae destitute 

 of distinct setulae, the hind ones with a raised dorsal ridge that divides 

 at about apical third to inclose a peculiar oval, flattened, or concave 

 area, which extends to the tip of the tibiae; wings hyaline, costal 

 vein reaching distinctly beyond middle of wing, first division full}^ 

 twice as long as other two together, third division slightly shorter 

 than second, fringe quite long and closely placed, fourth vein slightly 

 and evenly curved; knob of halteres whitish. 



Length, 1.2 mm. 



Described by Brues ^ from two specimens reared June 21, (1909?) 

 by Prof. J. B. Smith from an agaric mushroom, Stelton, New Jersey. 



I have altered the reading, but not the substance of the descrip- 

 tion to make it conform to that of other species in this paper. (See 

 note under last species. 



APHIOCHiETA FUSCOPEDUNCULATA, new species. 



Female. — ^Black, shining; frons distinctly longer than broad, 

 sliining, thickly covered with short hairs in addition to the usual 

 bristles, lower pair of post-antennal bristles half as large as the large 

 upper pair, first row with center pair of bristles nearly in transverse 

 line ^vith the upper post-antennals and about midway between them 

 and the eye margin, outer pair very close to eye margin and much 

 higher on frons than center pair, second row straight, the center pair 

 about one-fifth the distance from ocellar triangle to upper post- 

 antennals, palpi small, brownish, arista about as long as frons, nearly 

 bare, palpi dusky yellow, moderate in size and rather strongly bris- 

 tled; thorax shining, pleurae dull black except on the lower two- 

 thirds of mesopleurae, which is very highly polished, scutellum with 

 two bristles; abdomen hardly shining, segments subequal and except 

 the last almost bare, sixth with very numerous short but no long 

 hairs, legs black, the anterior pair yellowish, only a few long hairs 

 on basal third of ventral surface on hind femora, and one or two of 

 the setulae near to tip on hind tibiae distinct, elsewhere short and 

 weakly haired; wings grayish, costa distinctly short of the middle, 

 first division slightly more than twice as long as second, third half as 

 long as second, fringe longer than fork of third vein but delicate, 

 fourth vein evenly arcuate on its whole length and like the fifth 



I BuU. Wis Nat. Hist. Soc., vol. 7, 1909, p. 107. 



