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Show 1878.] MR. F. MOORE ON THE LITHOSIID^E. 3 1. A Revision of certain Genera of European and Asiatic Lithosiidse, with characters of new Genera and Species. By F. M O O R E , P.Z.S., Assistant Curator, India Museum, London. [Eeceived October 29, 1877.] (Plates I.-III.) Family LITHOSIID^E. Subfamily HYPSIN^E. All the genera in this subfamily possess a peculiar stridula-tory apparatus in both sexes. This is distinctly visible on the upperside of the posterior margin of the fore wing, and as viewed from the underside of the wing appears as a short oval nacreous cavity, situated between the submedian vein and the extreme margin, along the upper edge of which projects a raised longitudinally oblique fold, which is smooth in some, and transversely scabrous in others ; and on the upperside of the hind wing is a patch of scabrous scales, or a short transverse outwardly-curved raised scabrous bar, which, by the motion of this wing, evidently plays upon the raised fold over the edge of the cavity, and produces a stridulating sound. HYPSA, Hiibner, Verz. bek. Schm. p. 172. H Y P S A CANARAICA, n. sp. • Female. Upperside-fore wing cinereous brown ; veins white ; base of wing ochreous and spotted with black ; a whitish clavate streak from lower end of the cell; cilia cinereous : hind wing white, with broad black marginal band crossed by white veins ; four black discal spots and a short anal streak ; cilia whitish. Thorax ochreous, with small black spots; abdomen brighter ochreous, with a dorsal and lateral row of black spots. Underside cinereous brown, basal half of fore wing white, with two broad black spots within, and a third below the cell; hind wing as above, with the marginal band extending along the costa. Near to H. heliconia. Expanse 2 inches. Canara (Ward). In coll. F. Moore. HYPSA SERICEA, n. sp. Male. Upperside pale silky ochreous-yellow ; cilia whitish: fore wing with the base brighter and dotted with black; an indistinct whitish spot from lower end of the cell: hind wing with costal border whitish; a broad cinereous brown marginal band and two confluent longitudinal discal streaks. Body pale ochreous-yellow; abdomen brighter with dorsal and lateral row of black spots ; palpi with black terminal point and two lateral spots ; legs grey, streaked with black. Underside cinereous brown; fore wing with yellow hind margin and basal costal streak ; hind wine; with marginal band and 1* |