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Show 424 MR. W. WARREN ON N E W GENERA AND [Apr. 18, 2 darker blotches at its outside on the costa and inner margin, and 2 dark dots on the median vein; exterior line starting from costa at |-, blackish, denticulate, forming a series of curves concave to the hind margin, and curving in so as to reach the inner margin about the middle; central area between this fine and the first olive fascia silvery ochreous, with an olive thread-like line down the centre, starting from a black costal spot; cell-spot brownish, standing in the middle of a circular olive patch; exterior line followed by a broad olive fascia like the first, containing a series of oblong darker spots on the veins ; subterminal line whitish, denticulated, and apparently double; in the space between the two, opposite the cell, 2 oval dark-brown spots one upon the other; a slightly paler oblique subapical patch ; fringes chequered, their base preceded by a row of black separate lunules; hind wings dull ochreous white, slightly dusted with darker, with a distinct dark cell-spot, an undulating dark grey central line, and a broad dark grey submarginal band, which is narrower towards the anal angle, and paler towards the fringes, which are straw-colour, un-chequered, preceded by a row of black lunules. Head, thorax, and abdomen pale ochreous olive. Underside pale straw-colour, mottled with dark grey, with the cell-dots large and dark; a dark blotch on the fore wings representing the two oval spots in the sub-marginal line on the upperside, and a vertical dark-grey blotch between this and the cell-spot. Expanse of wings 36 millim. Hab. British Bhotan. This and suhalbida are wonderfully alike, but they may be distinguished by the distance of the exterior line from the hind margin. In marginata this is nearly in the centre of the wing; in subcdbida decidedly beyond the centre. [One male was taken by myself at light at Bikisum at 7000 feet on August 18. This is a halting-place on the upper road to Bhotan. I have seen a female which agrees with it in Knyvett's collection.- H. J. E.] ARICHANNA RUBRIVENA, sp. n. (Plate XXX. fig. 13.) 2 . Fore wings whitish, almost entirely overlaid with olive-fuscous and ochreous scales, giving the wing a mossy appearance; first line thick, diffuse, dark olive fuscous, at |, interrupted in the middle and edged internally with paler; exterior line double, each half thick, also dark olive fuscous, slightly sinuous, and interrupted in mid wing, followed by a paler, clearer white space; a diffuse quadrate fuscous-olive blotch on the costa before apex, indistinctly edged with paler; hind margin irregularly suffused with fuscous-olive scaling ; fringes mottled, light and dark, preceded by a series of rather large black spots between the veins ; a large, squarish dark cell-spot. All the veins Avell marked in rust-colour. Hind wings rather glossy, dull grey, with the mottlings of the underside showing through ; cell-spot small, black. Head, thorax, and abdo- |