64 Bulletin of the Brooklyn Entomological Society VoI.X 



sex of Rh. tenuipes, from which it differs solely by having the 

 mesonotum a little broader in proportion to its length. 



Bainbridge, Georgia (J. C. Bradley). 



In the color and venation of the hemelytra the winged form of 

 Rh. trnlliger does not differ from the two other North American 

 species. 



The species occurred at Bainbridge in society with Rh. tenuipes, 

 but no specimens of Rh. Rileyi were found at that locality. 



For the following reasons I think it almost certain that Rh. 

 trnlliger also occurs near Washington, D. C. Since several years 

 the title-page of the Proc. Ent. Soc. Washington is ornamented 

 with a figure of a macropterous Rheumatohates supposed to 

 represent Rh. Rileyi. It seems to me that the drawer of this 

 figure has had specimens of both Rh. Rileyi and trnlliger before 

 him. The whole middle legs and the hind femora in that figure 

 are taken from Rileyi, but the hind tibiae from a specimen of 

 trnlliger. I dare say that no specimen of Rileyi with hind tibiae 

 like those of said figure can be found in any collection. 



TWO NEW NORTH AMERICAN DIPTERA. 



By J. R. Malloch, Urbana, 111. 



The types of the two species described herewith are deposited 

 in the Illinois State Laboratory of Natural History, Urbana, 111. 



Borborus scriptus, n. sp. Male: Deep black. Head shining, 

 the frons with a velvety black M-shaped mark on the central 

 stripe, on either side of the triangle and the stripes which bear 

 the serial cruciate setulse; upper half of cheeks glossy, the lower 

 half with whitish pruinescence. Mesonotum shining, the disc 

 with slight brownish pruinescence ; scutellum concolorous with 

 disc ; pleurae highly glossy except on upper and posterior margins. 

 Abdomen subopaque, the surface with slight brownish pruines- 

 cence. Legs black, the bases of fore tibiae and their tarsi yellow- 

 ish. Wings milky white, costal vein yellow, the other veins 

 vitreous. Squamae white. Halteres yellowish white. Hairs and 

 bristles black. 



