JANUARY, 1862. 179 



[Extracted from the Proceedings of the Entomological Society 

 of Philadelphia, Vol. I. pp. 131137, January, 1862.] 



NEW AMERICAN MICRO-LEPIDOPTERA. 



BY BBACKENRIDGE CLEMENS, M.D. 



OPOSTEGA, Zeller. 



Discoidal cell of wings open. Hind-wings extremely 

 narrow, linear-lanceolate. The subcostal vein is central and 

 becomes trifid beyond the middle of the wing, sending an 

 extremely short branch to the costa from the point of sub- 

 division and two long branches, one of which runs to the tip 

 of the wing and the other to the inner margin. The median 

 vein is distinct, curved, simple and nearly joined by the inner 

 extremity of the subcostal vein. The submedian distinct and 

 short. 



Fore-wings pointed, almost caudulate, but appearing from 

 the cilia to be dilated posteriorly. All the veins simple, 

 parallel, without branches, some much attenuated and none 

 extended to the tip of the wing. Subcostal vein much 

 attenuated, nearly obsolete, equally remote from the costa 

 and the median vein, which is thickened and distinct, and 

 runs through the middle of the wing without reaching the 

 inner margin below the tip. The fold of the wing is distinct, 

 with a parallel, much attenuated nervule above it, arising at 

 the extreme base of the median. The submedian vein dis- 

 tinct, thickened. 



Head smooth above. Face mostly on the inferior surface 

 of the head, extremely narrow, hairy beneath and between 

 the antennas in front. Eyes oval, obliquely placed, almost 

 concealed by the antennal eye-caps. Antennae with the 



N2 



