862 CHARLES T. BRUES. 



size; arista long, pubescent; cheeks just below the eye with two stout down- 

 wardly directed macroc-hsetse. Abdomen opaque, sometimes brownish or black- 

 ish above, hut without distinct markings. Legs yellow, the tips of the posterior 

 femora infuscated ; posterior tibiae lined above with black and delicately spinu- 

 lose. Wings grayish brown ; costal vein reaching to the middle of the wing, its 

 bristles very short ; first longitudinal vein very short, so that the first segment 

 of the costa is no longer than the second ; fourth vein, which arises at the bifur- 

 cation of the third, somewhat arcuate and terminating before the apex of the 

 wing. 



This common and variable European species is represented in the 



collection by numerous specimens from Wisconsin (Wheeler) and 



New Jersey (Johnson). Many of the specimens vary much in color 



from the type form, but all seem to belong to a single species. Some 



have the costal bristles a trifle longer, and spotted or banded abdo 



mens, otherwise they are exactly similar. 



Apliioclueta atlaiitica sp. nov. (Plate vii, fig. 30.) 

 Length 1.75-2.5 mm. Yellow, except tips of hind femora and anterior lateral 

 corners of abdominal segments. Head honey yellow, front thickly covered with 

 fine black hairs. Ocellar tubercle and median furrow present; frontal chaetotaxy 

 normal, except that the four proclinate bristles are of nearly equal size and 

 placed in a curve, besides these there is only a single reclinate bristle in the 

 lower row, quite close to the eye. At the lower margin of the eye is a row of 

 stout, downwardly directed bristles, Palpi very small. Antennae yellow, with 

 a pubescent arista. Thorax somewhat shining, black pubescent, with two scu- 

 tellar bristles and a single pair of dorsocentrals. Abdomen yellow, the second 

 to fifth segments with a small black spot at the side anteriorly ; tip of abdomen 

 black. Second segment with a few weak bristles laterally. Legs yellow, except 

 the tips of the hind femora, which are blackish ; posterior tibiae with a black line 

 above and distinctly ciliated with delicate bristles. Wings yellowish, the veins 

 very strong, fuscous; costa extending to the middle of the wing, with closely 

 placed, very short bristles, first vein ending a little nearer to the tip of the third 

 than to the humeral cross-vein ; fourth vein evenly curved. 



Described from a number of specimens, — one from Atco, IS". J. ; 

 one from Natrona, Pa. (Johnson) ; several from Wood's Hole, Mass. 

 (Melander and Brues). 



This species closely resembles flava Fallen, but differs by the 

 arrangement of the frontal bristles. 



Iphiochreta latest Meigen. (Plate vii, fig. 31.) 

 Meigen, Syst. Beschr. vi, 220. 

 Fallen, Dipt. Suec, Phhytomyzides, 7, 8. 

 Macquart, S. a Buflon, ii, 628, 18. 

 Zetterstedt, Ins. Lap., 797, 11. 

 Zettc-stedt, Dipt. Scand., vii, 2877. 

 Becker, Monog. Phoridse, p. 54. 



