Sept., I9I3-] Melander: Synopsis of Diptera. 261 



thirds the length of the discal cell, the segments of the fourth vein about one 

 to five, the basal section of the fifth vein longer than the outer section. 



I have sixteen specimens before me, all males, from Troy, Idaho, 

 Pullman, Washington, and Steiermark, in Europe. The last men- 

 tioned were received from Professor Strobl. This variation is most 

 nearly related to curvipalpis ; it is not the true inaura nor morionella, 

 the males of which have a carinate face and the full set of fronto- 

 orbital bristles. 



Agromyza rutiliceps new species. 



Male. — Length 2 mm. Shining black, very lightly dusted, the front and 

 vertex except the ocellar triangle and the upper orbits, the face, cheeks, labella, 

 very narrow line on the notopleural suture, halteres, calypteres and their fringe, 

 and the base of the wings reddish to yellow. Antennae and palpi black. Bris- 

 tles of head and thorax very long, the ocellar bristles reaching nearly to the 

 antennae ; four pairs of fronto-orbitals ; four dorsocentrals, one of them pre- 

 sutural. Abdomen with short close hairs, none of the incisures pale, hypopy- 

 gium small, concolorous. Legs entirely deep black. Wings hyaline, veins 

 narrowly black, the fourth vein ending beyond the wing tip, its penultimate 

 section one third the length of the ultimate, one and one half times the length 

 of the posterior crossvein and three fourths the length of the ultimate section 

 of the fifth vein ; anterior crossvein beyond the end of the first vein. 



One specimen, sent in some grass sweepings by William M. Mann, 

 who collected it at Nigger Hill, Powell County, Montana, July, 1912. 



Agromyza genualis new species. 



(^ $. Length 2.5-3.5 mm. Black, the front, face, cheeks, lower occipital 

 orbits, narrow line bounding the mesopleurae above and behind, the halteres, 

 calypteres and root of wing, a transverse line below the scutellum, the knees 

 and some of the incisures of the abdomen yellow. Upper frontal orbits and 

 the ocellar triangle blackish. Antennae and palpi black. Bristles strong, five 

 or six fronto-orbitals, the uppermost somewhat distant from the others, on the 

 orbits besides the fronto-orbitals a row of close minute hairs ; ocellar bristles 

 reaching about two thirds the distance to the antennae ; two vibrissae. Cheeks 

 about one fourth the eye-height. Thorax opaque black, dusted, the bristles 

 and setulae strong ; four dorsocentrals, of .which one is in front of the suture ; 

 four rows of acrostichals and numerous lateral setulae present ; pleurae pol- 

 linose, meso- and sternopleurae setulose, one sternopleural and a row of four 

 mesopleural bristles longer, prothoracic bristle large. Abdomen subshining, in 

 the female the hind margin of the fifth segment alone is narrowly yellow, sixth 

 segment of female broad, depressed; male abdomen entirely black, the hypo- 

 pygium somewhat larger than the distal segments, globular, deeply excised and 



