FUNGUS GNATS OF NORTH AMERICA. I5I 



widely separated from the eyes; palpi 4 jointed, cylindrical, the 

 first 2 joints short, third joint about half again as long as the 

 second, the fourth slender, sickle shaped, twice as long as the 

 third; antenna 2-(-i4 jointed, the first one cyathiform, the sec- 

 ond cylindrical, the following joints cylindrical, slightly con- 

 stricted in the middle. The hypopygium stands out, ovate in 

 form, rather large, and not retractile into the abdomen. The 

 tibial setae are present. The costa extends beyond the tip of 

 R4+5, just reaching the tip of the wing; subcosta ends in Rj 

 upon the small cell R^ : this cell is usually over twice as long as 

 wide ; the media is forked under the distal extremity of this 

 cell ; the cubitus forks far proximad of the R-M crossvein, its 

 branches widely separated ; the second anal vein is stout and 

 ends far beyond the base of the fork of the cubitus; the third 

 anal vein is rather long but slender (fig. 92). 



Table of Species. 

 a. Wings hyaline. 



b. Petiole of the media about five times as long as the 



R-M crossvein. i. piiUata. 



bb. Petiole of the media about twice as long as the R-M 



crossvein. 3. N. sp. 



aa. Wings dark brown ; petiole of the media about equal to 



the R-M crossvein in length. 2. fuscipennis. 



I. Dsicdzickia piillata Coquillett. 

 1904. pnllata Coquillett, Invertebrata Pacifica I. 19. (Necem- 



phcria). 



Male. Length 3.5 mm. Brown, the first two joints of an- 

 tennae, humeri, genitalia and legs, yellow, the latter changing to 

 brownish toward apices of tarsi ; antennae over twice as long 

 as the head and thorax, joints of flagellum very elongate, the 

 third joint of antennas about 5 times as long as wide ; body 

 opaque, the hairs and bristles black; bristles of tibiae shorter 

 than greatest diameter of the latter; wings hyaline, pubescent, 

 subcostal vein terminates in Rj slightly before middle of cell 

 Rj, this cell about 3 times as long as wide, R^^.- strongly bowed 

 forward, peduncle of cell M^ about 5 times as long as the R-M 

 ciossvein, cubitus at about one- fourth of distance from its base 

 to the R-M crossvein. Stanford University, California. 



Two male specimens taken in December by Professor W. M. 



