SEPTEMBER, 1865. 273 



INCUR VARIA, Haw. 

 Proc. Acad. Nat. Sci., Jan. 1860, p. 5.* 



Fore and hind wings lanceolate, pointed. Fore-wings, 

 subcostal vein with three branches near the end of the disk ; 

 apical branch furcate near its base ; discal nervules two. 

 Hind-wings, subcostal vein furcate ; discal nervule one. 



Incurvaria mediostriatella. Fore-wings iridescent bluish- 

 purple, with a broad golden stripe from the base to the 

 middle of the dorsal margin, leaving a stripe of the general 

 hue on the base of the dorsal margin, and with a rather broad 

 obliquely placed costal streak, of the same hue, at the begin- 

 ning of the apical cilia. The cilia are intermixed with golden 

 scales. Hind-wings reddish-purple, cilia fuscous. Antennas 

 and head pale yellowish. 



Taken on wing in damp woods, the latter part of July. 



This species differs, in some respects, from both russatella 

 and Acerifoliella and from the European typical species. 

 The antennae are nearly if not quite as long as the fore-wings, 

 and perhaps in the future it may be necessary to create a new 

 group for its reception. I have not deemed this advisable at 

 present, as its oral parts are quite identical with those of the 

 genus. 



Easton, Pennsylvania. 



See ante, p. 89. H. T. S. 



