FUNGUS GNATS OF NORTH AMERICA. 1 75 



Female. Like the male but the wing is about 3.75 times as 

 long as the fore metatarsus. New York ; Rhode Island ; Massa- 

 chusetts (Johnson, col.) ; New Hampshire; Montreal. July and 

 August. 



Two females from Wisconsin collected by Professor Wheeler 

 differ only in having the petiole of media and M^ subequal. 



8. Myconiya tantilla Loew. 



1869. tantilla, Loew. Berl. Ent. Zeitschr. XIIL 140 (Sciophila). 

 Male. Length 3 mm. Head fuscous, palpi, proboscis, scape 

 and basal joints of flagellum yellow, remainder of flagellum fus- 

 cous ; basal flagellar joints about 1.5 times as long as wide; an- 

 tennal hairs pale, set^e of head black. Thorax yellow, dorsum 

 dark brown or with three subconfluent stripes in immature speci- 

 mens ; scutellum slightly infuscated; metanotum subfuscous, the 

 four scutellar setae and setae of the thorax are black ; dorsum 

 with a few fine pale hairs. Abdomen yellow, tergites each more 

 o! less widely margined with black or dark brown, in well 

 colored specimens the dark color is produced forward along 

 the median line to almost the front margin leaving only more 

 or less triangular yellow patches on the sides, in immature speci- 

 mens the dark color is confined to the posterior third of the seg- 

 ment ; hairs of abdomen dusky. Hypopygium (figs. 140, 143) 

 yellow, resembling that of M. brunnea Dzied. ; large ; the in- 

 ferior sclerite (shown folded down in fig. 140a, and in profile 

 in fig. 143) is large, with 2 stout spines on each lateral margin 

 projecting laterad ; the intermediate appendages are slender, 

 Irnceolate. not produced much beyond the end of the inferior 

 margin ; the latter has four blunt lobes ; in addition there are 

 on the inner surface a pair of slender cylindrical processes and 

 a pair of four-tined forks. The legs are yellow, quite slender; 

 the fore metatarsus is ^ as long as the tibia, the larger setae 

 of the hind tibia are longer than the diameter of this member. 

 Wings (fig. 105) hyaline, slightly tinged with yellow; subcosta 

 ends in the costa opposite the distad end of the cell R, ; the sub- 

 costal crossvein is about at the middle of this cell which is not 

 twice as long on anterior margin as wide ; R4+5 ends before the 

 tip of the wing and very slightly before end of costa; petiole 

 of the media is longer than M. ; the cubitus forks slightly distad 

 of the R-M crossvein. Length of the wing is 3 mm., which is 



