1S65.] 133 NORTH AMERICAN MI C RO-L E P I D P TE R A. BY BRACKENRIDGE CLEMENS, M. D. {Communicated Aug. 14, 1865.) TOIITRICID.^. STIGMaNOTA, Guenee. Proc. Acad. Nat. Sci., Aug. ISGU. p. l]j\. Fore-wings witli a curved blotch or luuule on the dorsal margin. The blotch bearing three lines or streaks tristrigana. The blotch bearing one streak interstinctana. Stigmonota tristrigana. n.s. — Fore-wings blackish-brown, costa pale-yellow from near the base of the wing to the tip, with eight blackish, oblique streaks and four bluish metallic spots adjoining the yellowish costal stripe. On the mid-dle of the dorsal margin is a large pale-yellow blotch containing three blackish lines, with a bluish metallic spot above it in the middle of the wing, and a semi-I)and between it and the hinder margin. Hind wings dxrk brown. Coll. Eat. Soc. Pliiladelpliia. — Virginia. SERICORIS, Treit. Exartema, Proc. Acad. Nat. Sci., Aug. 1860, p. 356. The want of i good systematic work and European generic types renders classification in this family a work of much labor. I was not, however, convinced when I described the group Exartema, that it would be tenable as a ncAV one ; for it was the peculiar outline of the inner margin of the hinder wings, and the appendage attached to them, that chiefly induced me to describe the imagines included under this name as forming a new genus. Upon a review of the subject. I think there is no doubt of the cor-rectness of the present location of the insects included in this group. I have not enough specimens to determine whether the appendage referred to, is common to all the specimens described, or whether it is .sexual or accidental. It is difficult to tabulate the described species. Individuals not only vary considerably in hue, but species apparently distinct approach each other closely in general color. . Fore wings with a small white spot in the central fascia on the end of the disk mutabilana. Fore wings yellowish, or ferruginous with black dashes and brown markings. Fore wings without a small white spot in the central fascia. Fore wings reddish-brown : markings pure l)rown nitidana. Fore wings ochreous-brown or dark-brown : central fascia distinct.
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