331 



tincfc, sinuate, blackish line on a whitish field, and still beyond is a brown 

 line half as wide as on the upper side of the wing; the edge of the wing is 

 whitish, with fine intervenular black spots, and the fringe is checkered with 

 black opposite the ends of the venules. 



Length of body, 0.23 ; of fore wing, 0.28 ; expanse of wings, 0.60 inch. 



California (Edwards). 



Differs from the other species here noticed by its diminutive size and 

 granite-gray color. It is closely allied in form and size, as well as the style 

 of markings, to the eastern A. ossulata. 



Acidalia perirrorata Packard. Plate 10, fig. 46. 



Acidalia perirrorata Pack., Fifth Rep. Peab. Acad. So., 71, 1873. 



6 <f . — Compared with A. ossulata Guen., witli which this species struc- 

 turally agrees, the wings are much produced, and the primaries still more 

 acute. The front of the head is not colored differently from the body, and 

 the palpi are stout, porrcct, but not passing beyond the front ; body and 

 wings, including fringe and palpi, ash-gray, paler than in A. ossulata. Fore 

 wings crossed by three dark, distinct lines (often obscure) ; they are oblique, 

 wavy, but not sinuate, being straight in their oblique course : inner line remote 

 from the base of wing; second line running just beyond the fine dark discal 

 dot, nearly touching it, and much nearer the outer than inner line; outer line 

 straight, parallel with the outer edge; fringe pale gray, speckled finely with 

 dark, dark at base. Hind wings paler than primaries, discal dot more distinct, 

 with three faint lines beyond the discal dot. Beneath, much as above ; more 

 densely dusted than above on both wings ; posterior half of primaries, except 

 on outer edge, clear whitish ; discal dots more distinct than above ; the two 

 outer lines on the fore and three outer lines on the hind wings distinct. 



Length of body, <?, 0.25, 9, 0.25; fore wing, <?, 0.38, 9, 0.36; expanse 

 of wings, 77 inch. 



Waco, Texas, June, July, August (Belfrage) ; Dallas, Texas, April 2-5 

 (Boll, Mus. Peak Acad. Sc). 



This peculiar species has the front not dark as usual, but concolorous 

 with the body ; this, with the pointed fore wings, with their long, very 

 oblique outer edge, which is much less convex than in A. ossulata, the dark 

 fringe, straight lines, and densely-dusted wings, will separate it from any other 

 species known to me. 



