o. Front margin of the wings with a patch of whitish and yellow scales at a point about two-thirds or three-fourths of the way from base to apex of wing. p. Veins of the wing with many broad obovate outstanding scales; thorax with a black dot near the middle of each side. W. I. A. GRABHAMI* pp. The outstanding scales of the wings rather narrow, lanceolate. q. Scales of the last vein of the wings white, those at each end black; R_{4+5} black scaled, the extreme apex white scaled. Widely distributed north and south (fig. 131). A. PUNCTIPENNIS A dark variety from Pennsylvania has been named A. PERPLEXENS. qq. Scales of the last vein of the wing white, those at its apex black; R_{4+5} white scaled and with two patches of black scales. South and the tropics. A. FRANCISCANUS and PSEUDOPUNCTIPENNIS* oo. Front margin of the wings wholly black scaled. p. Last (anal) vein of the wings white scaled with three patches of black scales (fig. 132). New Jersey to Texas. A. CRUCIANS* pp. Last vein of the wings wholly black scaled. q. Widely distributed north and south (fig. 130), (= MACULIPENNIS). A. QUADRIMACULATUS* qq. Distributed from Rocky Mountains westward. A. OCCIDENTALIS kk. Scutellum distinctly trilobed. l. Cell R_2 less than half as long as its petiole; thorax with metallic blue scales; median lobe of the scutellum not tuberculate; few small species which are not common. URANOTÆNIA Arrib. ll. Cell R_2 nearly or quite as long as its petiole, or otherwise distinct.