FUNGUS GNATS OF NORTH AMERICA. I57 



spur on the under side near the apex; the fore tibise each with 

 one, the middle and hind tibiae with two spurs. The wing vena- 

 tion resembles that shown in figure 94, the forking of cubitus 

 being proximad of the crossvein, the subcostal crossvein is near 

 the base of the small cell ; R^ is nearly straight, and R4+5 is 

 slightly curved forward so that the distal third is parallel with 

 Ri and ends more than the length of the R-M crossvein before 

 the tip of the wing. The cell R^ is about 1.5 times as long as 

 broad. The wings are short haired ; the veins are yellow ex- 

 cepting the crossveins which are dark brown. Covering the 

 crossvein is a pale brown cloud, and near the apex below R^ 

 is another. The halteres are a dusky yellow or brown, the base 

 of the peduncle is yellow. Described from one specimen taken 

 June, 1 901, at Axton, N. Y. 



I have also seen a specimen from Hampton, N. H., collected 

 by Mr. S. A. Shaw. To the above description I may add that 

 the three ocelli are in a transverse row on the front; the fore 

 metatarsus is nearly 1.4 times as long as the tibia in the male, 

 a little less in the female ; claws all with two basal teeth ; hypo- 

 pygium as shown in figure 125. 



A female specimen taken by Mr. Shaw at the same place and 

 time differs in having the intermediate segments of the abdomen 

 with a reddish tinge ; in one wing wholly lacking R0+3, and but 

 feebly indicated in the other. This specimen would have been 

 classified with Lcptomorphus owing to the defective venation 

 had it not been accompanied by the male. 



II. Genus Nccempheria Osten Sacken. 

 Ncccmpheria, Osten Sacken, Catl. Dipt. 9. 1878. 

 Emphcria, Winnertz, Verb. Zool.-bot. Ges. Wien. XIII. 707. 



1863. 



Ocelli two, large, closely approximate, if a median one is 

 present it is exceedingly minute ; eyes usually circular, but little 

 if any emarginate; antennae somewhat compressed; no spur on 

 middle coxae of males; costa (fig. 95-100) usually produced 

 m.ore or less beyond the apex of R^+r, which usually does not 

 reach the tip of the wing; a conspicuous longitudinal fold lies 

 between the radial sector and the media ; wing with fasciae or 

 spots. Thorax somewhat setose; hypopygium various. In 

 other respects like Mycomya. 



