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Show 76 MR. A. G. BUTLER ON LEPIDOPTERA [Jan. 17, 104. PlNACOPTERYX ORTYGNA. Pieris ortygna, Hiibner, Zutr. exot. Schmett. figs. 985, 986 (1832). o". Fdda, 23rd, 28th, and 31st October; 20th and 23rd November, 1885. The female of this species is unknown to me, but there is no doubt that it somewhat resembles the female of Ganoris rapm. Mr. Doubleday identified this species with the Pieris orbona of Boisduval's ' Lepidoptera of Madagascar,' and thus led m e into error : the latter is a Glutophrissa. 105. PHRISSURA SYLVIA, var. Papilio sylvia, Fabricius, Syst. Ent. p. 470. n. 115 (1775). 3. Kangasi, 20th November, 1883; Stazione Gadda, 31st January, 1884 ; Monbuttu in July and August. 106. BELENOIS INSTABILIS, sp. n. A very variable species, allied to _B. calypso; much smaller. The male above milk-white ; primaries with narrow costal margin black excepting at base where it is grey; a black wedge-shaped costal dash extending in a thin line along the upper discocellular veinlet; a large black spot on the lower discocellular ; apical area and external border black, wider than in B. calypso, but with the same white spots upon it : secondaries with a minute black dash on the lower discocellular; an arched series of black spots, the first three in an oblique subapical series, the last three submarginal, connected by a grey nebulous streak ; a marginal series of six large triangular black spots, united externally by a black marginal line ; body normal. Primaries below nearly as in B. calypso, but the subapical angulated black band more regular, not so much broken up, an additional blackish spot on the first median interspace; the apical area creamy white divided by black veins, which are less widely black-bordered than in B. calypso : secondaries sulphur-yellow, with brown veins terminating in triangular marginal spots ; a dark brown spot at the end of the cell and seven submarginal spots : body below white. Expanse of wings 64 millim. 2 . Darker than the darkest females of B. calypso; resembling, in fact, the female of B. clytie, but without the subapical white spots, with the basal area heavily suffused with grey, and with the oblique bar at the end of the discoidal cell of primaries imperfectly separated from the broad blackish external area: on the under surface it differs from the darkest females of B. calypso in havin°- the macular subapical band of the primaries widened into a broad black belt, almost touching the oblique discocellular bar, the lower submarginal spots small and the basal area yellower ; the secondaries with the veins blackened from the middle outwards, the submarginal black spots united into a blackish belt, and the last five yellow-marginal spots rounded and smaller. Expanse of wino-s 58 millim J $. Fdda, 23rd, 27th, and 28th October; 17th and 26th November, 1885. |