291- Professor Williston on the 



Erioptera. 

 Meigen, Illiger's Mag., il., 1803. 



1. Erioptera calopfera. 



Eriopfera caloptera. Say, Jonrn. Acad. Nat. Sci. Phil., 

 iii., 17; Compl. Wr., ]i., 44; AViedemaun, Auss, 

 Z\v. Ins.. i.. 23 ; Osteii Sacken, Proc. Acad. Nat. 

 Sci. Phil., 1850, 226; Monoghr., iv., 161, pi., iv., 

 f. 15. 



Hah, Atlantic States; Kansas; Colorado; Canada; 

 Cuba. 



One specimen, which scarcely differs from others 

 from Kansas. 



2. Eriopfera aunulipes, n. sp. 



9 . Legs conspicuously white and black annulate. Length 

 3-3^ mm. 



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

 mesonotum. Thorax and abdomen j^ellowish-brown, the latter 

 posteriorly more yellow. Legs conspicuously white and dark- 

 brown annulate, the femora, t.biie, 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. I'hil, 1859. 



]. Epiphra'jma sa'-heni, 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 antennie brown, the third and fourth yellow ; 

 remainder of the antennas blackish ; if bent back, the antenna; 

 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 pleurse. Halteres yellow, 

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



