Kahl: The Dipterous Genus Leucophenga Mik. 385 



The chsetotaxy is as described above for the genus Leucophenga; 

 the fronto-orbital, vertical, and ocellar biistles of same strength. 

 The upper reclinate bristle appears to be very slightly nearer to the 

 inner vertical than to the lower reclinate and situated slightly higher 

 up than the lower ocellus. Postverticals very minute, slightly cruciate 

 at tips; lower occipital orbit with a small seta, differentiated from the 

 setulcc or ciliae in the occipito-orbital fringe; the uppermost setula in 

 that fringe is longer than, and div^erging from, the others; a very minute 

 setula between the two sternopleural bristles; the anterior dorso- 

 central is very small, hardly as large as the prescutellar pair, which is 

 situated a little nearer to the scutellum than is the posterior dorso- 

 central; the presutural and anterior supra-alar small, but distinct: 

 posterior post-alar minute, but distinct; the distance between the 

 apical, decussate bristles of scutellum not less than the distance from 

 either of them to its nearest lateral bristle; the lateral bristles of scutel- 

 lum are diverging; bristles and setulse black. Veins brownish, the 

 color more intense at the brown spots; apical portion of fourth vein 

 light. Length 2.5 to almost 3 mm. 



The species is widely distributed. Walker simply records it " United 

 States." The writer has taken it on windows and reared it from a 

 mushroom of the family Agaricacece at Urbana, Illinois, 1893, and on 

 windows at Lawrence, Kansas, and Pittsburgh, Pennsylvania. At 

 the latter place also by sweeping in grassy, springy places the writer 

 found it very abundant together with Scaptomyza graminnm and 

 adusta and the beautiful Ephydrid, Hydrellia formosa Loew, on the 

 moist lawns at Hotel Rainier, Ohio Pyle, Fayette Co., Pa., associated 

 with the more abundant Hydrellia formosa Loew. There are speci- 

 mens in the Carnegie Museum from Westmoreland Co., Pa., collected 

 by H. H. Smith and Rev. P. Modestus Wirtner, and from Cheat Mts., 

 W. Va. and Green Co., N. Y., collected by H. H. Smith. Mr. C. W. 

 Johnson records it from New Jersey and Florida. 



Many years ago, while a member of the Faculty of the University 

 of Kansas, the writer made the following marginal note on Drosophila 

 qiiadrimaculata Walker in his copy of "Insecta Saundersiana": 

 "Can this be a Leucophenga?" As Walker does not mention the 

 length of costa, the writer's suspicion was only expressed on account 

 of the spotted abdomen and the two costal spots of the wings, which 

 agreed with a species of Leucophenga from Illinois and Kansas, which 

 he had labelled n. sp., and the writer's statement to Professor Aldrich 



