291- Professor Williston on the 



Erioptera. 

 Meigen, lUiger's Mag., ii., 1803. 



1. Erioptera caloptera. 



Erioptera caloptera. Say, Joiirn. Acad. Nat. Sci. Phil., 

 iii., 17; Compl. Wr., li., 44; Wiedemann, Auss. 

 Z\v. Ins.. ].. 23 ; Osten Sacken, Proc. Acad. Nat. 

 Sci. Phil., 1859,226; Monoghr., iv., 161, pL, iv., 

 f. 15. 



Hah, Atlantic States; Kansas; Colorado; Canada; 

 Cuba. 



One specimen, which scarcely differs from others 

 from Kansas. 



2. Erioptera ainiulipes, n. sp. 



9 • Legs conspicuously white and black annulate. Length 

 3-3 J mm. 



Head brown or blackish. Antennae brown, not longer than the 

 mesonotum. Thorax and abdomen yellowish-brown, the latter 

 posteriorly more yellow. Legs conspicuously white and dark- 

 brown annulate, the femora, tbise, and tarsi each with three brown 

 rings ; a fourth brown ring on the femora is more or less indistinct. 

 Wings nearly hyaline, the costa with four brown spots intercalated 

 with as many white ones ; the outer posterior margin also with 

 alternating white spots. 



Two specimens. 



EriPHRAGMA. 



Osten Sacken, Proc. Acad. Nat. Sci. Phil., 1859. 



]. Epiphra^jma sacheni, n. sp. (PI. X , fig. 68, wing.) 



^ . Head black in ground-colour, opaque yellowish-grey polli- 

 nose ; brown on the lower part of the broad front. First two 

 joints, of the antennce brown, the third and fourth yellow; 

 remainder of the antenna) blackish ; if bent back, the antennae 

 would reach about to the root of the wings. Mesonotum ochra- 

 ceous, with slender, dark-brown markings. Metanotum deep brown 

 or blackish, somewhat darker than the pleuras. Halteres yellow, 

 the knob brownish. Abdomen dark brown, the venter yellowish. 



