8 AMERICAN LEPIDOPTERA. 



Twenty-one specimens, all bred from larvte feeding in the flower 

 heads and young seeds of Vernonia noveboracensis, Caldwell, N. J. ; 

 issued August 4th to 10th ; District of Columbia, July 28th to 

 August 7th ; Dept. Agri., No. 3557, issued May 22d. 



Polychrosis ambrosiana sp. nov. 



Expanse 9-11 mm. 



Head : pale fawn in front, darker over eyes and above ; palpi very pale fawn, a 

 shade darker on outside and apex; antenna brownish fuscous, becoming dark 

 gray at outer end; thorax mottled, ochreous brown, black in centre; abdomen 

 smoky black, anal tuft whitish above, cinereous beneath ; legs very pale fawn, 

 banded and dusted with fuscous. 



Forewing: dull bluish gray, with a transverse brown band from middle of 

 costa to anal angle, narrow and blackish brown on upper half, widest and lightest 

 brown on lower half; an oblique line of the bluish ground color crosses this band 

 on lower half of wing, cutting off a triangular spot on the dorsal margin. There 

 is a narrow light brown fascia, mottled with darker brown close to base, and a 

 finer darker line before this; a large patch of fawn-brown, mottled with darker 

 brown covers apical part of wing, separated from the brown ocellate apical spot 

 by a crescent-shape line of bluish-gray. This patch, by a darker brown shade, 

 forms a large lunate spot in middle of wing before termen, which sends a long 

 spur into termen at middle, another into anal angle, and in upper end is connec- 

 ted with the fawn-brown streak along costa. The costal edge is fawn-brown, 

 with fine lines and dashes of darker brown and black. Cilia blackish-fuscous, 

 becoming brown at anal angle. 



Hindwing: smoky fuscous, cilia whitish. 



Underside both wings dark silvery-gray, costa dotted with pale fawn. 



Fifteen specimens, bred from larvse feeding in the seeds of Am- 

 brosia trifidi, from Cincinnati, Ohio, forwarded by Miss Annette 

 F. Braun, and one specimen bred many years ago from the same 

 seeds by Miss Mary E. Murtfeldt, at Kirkwood, Mo. Larvse were 

 full fed and pupating from Aug. 10th to 20th ; moths issued Aug. 

 20th to Sept. 10th. There is a later brood which hibernate in the 

 seeds as larvse. I have one flown specimen from Miss Braun, cap- 

 tured May 14th. 



Olethrentes gogana sp. nov. 



Expanse 20 mm. 



Head : dark fuscous ; palpi dark fuscous, black outwardly, pale ochreous at base 

 and underside of head ; antenna dark fuscous; thorax black, patagia and poste- 

 rior end streaked with reddish-brown ; abdomen light fuscous, with long lateral 

 tufts, anal tuft cinereous; legs cinereous dusted with black, 



Forewing: dusky black, with obscure grayish-white shining fascia and spots. 

 The most prominent is from inner fourth of costa to inner third of dorsum, 

 broader on dorsal margin. There are two narrower bands from beyond middle 

 of costa to dorsum of anal angle. There are three flattened spots under the costa 



