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Show 964 MR. G. F. HAMPSON ON THE CLASSIFICATION [Dec. 17, b. Fore wing, the projection of outer margin acute and hooked; antennae of male with short branches. (2)*PRIONOPTERYX ELONGATA, Zell. Hor. Ent. Ross. 1877, p. 27, pi. i. f. 9. C. America. Type. (3)fPRioNOPTERYX NEBULIFERA, Steph. 111. Brit. Ent., Haust. p. 317. Florida. Diathrausta octomaculalis, Fern. Ent. Am. iii. p. 127. B. Fore wing with vein 11 free ; the projection of outer margin blunt; hind wing with vein 4 stalked with 5; antennae of male with long branches. (4)fPRIONOPTERYX AFRICALIS, n. Sp. o*. Reddish brown suffused with grey ; palpi fuscous at sides; antennae ringed black and white. Fore wing with diffused grey below median nervure; an antemedial patch of dark scales above inner margin; the postmedial line very indistinct, highly angled on vein 5, then inwardly oblique and with streaks of dark scales beyond it; a submarginal brown line with white inner edge angled outwards to the marginal projection, then with three black specks with triangular white marks between them beyond it. Hind wing paler grey-brown; the cilia whitish. 2 • Rather paler and without tbe dark marks beyond the post-medial line of fore wing. Hab. Accra, W . Africa; Congo. Exp. cf 16, 2 24 m m. SECT. II. Fore wing with vein 7 absent; 11 becoming coincident with 12 ; hind wing with vein 4 absent; antennae of male with the branches of moderate length. A. Antennae of female simple; fore wing with the projection of outer margin acute and hooked. (5)fPRiONOPTERYX AOHATINA, Zell. Mon. Chil. & Cramb. p. 13. U.S.A. B. Antennae of female serrate ; fore wing with the projection of outer margin rounded. (6)tPRIONOPTERYX GRISEOSPARSA, n. sp. 2 . Head, thorax, and abdomen fuscous brown, thickly irrorated with grey. Fore wing brown, thickly irrorated with white; an obscure discocellular brown spot; a white mark at apex and some white on cilia. Hind wing whitish. Hab. Colorado (Cockerell). Exp. 30 mm. List of undetermined Species. Prionopteryx texturella, Zell. Hor. Ent. Ross. xiii. 28, pi. i. f. Zanzibar. „ bergii, Zell. Hor. Ent. Ross. xiii. 30, pi. i. f. 11. Buenos Ayres, |