164 MAINE AGRICULTURAL EXPERIMENT STATION. I9IO. 



yellow ; setulse of tibise and tarsi make these appear more dusky; 

 setse of middle and hind tibiae shorter than diameter of these' 

 members; each claw with a tooth on the under side near the 

 middle and 2 or 3 shorter tubercles near the base; fore meta- 

 tarsus over 0.9 as long as the tibia in the male ; subequal in the 

 female. Wings (fig. 100) hyaline, veins brown; a brown cloud 

 covers the subcostal crossvein and base of the radial sector; 

 another cloud covers R2+3, broadens posteriorly crossing the pos- 

 terior radial cell, then follows the posterior branch of the media 

 and merges into the brown which covers the entire apex of the 

 wing from the tip of R^ to beyond Cu^ ; posterior to Cu, there 

 is a faint indication of another cloud ; the costa is distinctly 

 produced beyond the apex of R4+g ; the subcostal crossvein joins 

 Ri opposite the apex of the subcosta and before the apex of the 

 very oblique first section of the radial sector ; the media forks 

 distinctly proximad of R^+g ; the cubitus forks about opposite 

 the base of the radial sector; anal vein distinct but incomplete. 

 Halteres yellow. Ithaca, N. Y. 



8. Necempheria balioptera Loew. 

 1869. balioptera, Loew. Berl. Ent. Zeitschr. XIII. 136. 



Female. Length 6.2 mm. Yellowish or dusky yellowish ; 

 body pile black. Head a little darker ; antennae reddish yellow, 

 apically blackish ; palpi black. The posterior margins of the 

 first abdominal segment with dark brown fascia and a large 

 spot near each latero-posterior margin of segments 2, 3 and 4. 

 In paler specimens the spots are pale brown. Hypopygium ro- 

 bust (fig. 129). Legs yellow, tibise somewhat darker, tarsi 

 blackish, fore metatarsus % as long as the tibia ; tarsal claws 

 each with 2 teeth. Wings (fig. 97) yellowish with a cinereous 

 tinge, toward the costa more deeply yellowish; costa slightly 

 produced beyond R4+5 ; the subcostal crossvein is placed near 

 the base of the cell R^, this cell is large and longer than the 

 petiole of the media ; a fuscous spot extends from the subcosta, 

 covering the subcostal crossvein, the basal section of the radial 

 sector, the R-M crossvein and following the course of the peti- 

 ole of the media ; R2+3 is covered by a small fuscous spot ; apex 

 of the wing .from the tip of R.^ to the tip of Cu^ fuscous as well 

 as the part behind Cuo, apically somewhat more faint. 



This species has been recorded from Illinois and New Jer- 

 sey. I have seen specimens from Ithaca, N. Y., and Chi- 

 cago, 111. 



