214 PAPERS BY DK. B. CLEMENS. 



subcostal vein divides into four branches, the first arising 

 behind the secondary cell and three from its hinder end, the 

 last of which is delivered to the tip of the wing. Beneath 

 these are three nervules thrown off from the middle of the 

 disk. The median is 3-branched, giving off the nervules 

 somewhat aggregated. 



Head smooth. Forehead broad. Ocelli large. Antennae 

 slender, short, not one-half as long as the fore-wings, with 

 distinct joints. Labial palpi arched, reaching about the 

 middle of the front (but in the dried specimen decumbent 

 or porrected), cylindrical, slightly hirsute; terminal joint 

 pointed, as long as the second. Tongue naked, of moderate 

 length. 



G. impigritella. Fore-wings dark bronzy-brown, with a 

 conspicuous, curved, silvery-white streak, arising from the 

 basal third of the inner margin, where it is widest and curving 

 to the middle of the wing, and dark-margined on both sides. 

 On the costa are five short, silvery-white streaks, the first 

 oblique, the others nearly perpendicular, all of which are 

 black-margined internally ; the lines which form these margins 

 are more or less distinctly extended across the wing. That 

 of the first and second costal streaks meet just above the end of 

 the conspicuous dorsal streak from the inner margin. Between 

 the costal streaks, the wing is slightly touched with golden- 

 brown. Opposite the first and second costal streaks is a small 

 white spot on the inner margin, the curved black marginal 

 line of the second costal streak touching its inner side. At 

 the tip of the wing is a conspicuous round black spot, and 

 beneath it, in the cilia, is a silvery-gray hook, and the cilia 

 of the extreme tip is slightly touched with a silvery hue. 

 Hind-wings and cilia of the same hue as the fore-wings. 



Antennas and head dark bronzy-brown. Labial palpi 

 whitish, with fuscous exteriorly. Feet annulated with white. 



Taken on wing in July. 



This insect is very like G. equitella of Europe. The 

 darker colour of our species, the dark-margined silvery 



