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Show 466 MR. A. G. BUTLER ON THE GENUS EUPTYCHIA. [Nov. 22, "Alis integris, fuscis: subtus strigis tribus fer rug ineis dimidioque apicali grisescente; posticis ocellis quinque bipupillatis, 2°, supra conspicuis. "About 1£ inch in expanse. The upperside of the wings dark brown. " The underside is of a pale shade, nearly of the same brown from the base to the middle, with two ferruginous transverse lines; becoming greyish towards the apex, with a row of four ocelli in the front wings, and a row of five in the hind wings, the second, fourth, and anal ones visible above ; these ocelli, which are bounded in front by a ferruginous waved line and a double blackish line, are very dark, with yellowish iris and double silver pupil; of those in the front wings only two (the first and last) are visible above."-Enc. Meth. Hab. Guiana. Var. Alar supra ocellis primo et quarto indistinctissimis, micro-scopio solum manifestis. Alar. exp. unc. If. Hab. Para. B.M. If measured as it is when set, this insect would only expand \\ inch; but taking each wing separately the expanse is If iuch. This fact perhaps may account for many errors into which authors have fallen with regard to the measurement of Lepidoptera. 20. EUPTYCHIA ERIGONE, sp. n. (E. marpius, var.?) (PI. X X X I X . fig. 5.) Alar supra olivaceo-fuscar, linea media obliqua fusca post cellam posita; anticar lineis tribus marginalibus indistinctis fuscis; posticar lineis tribus distinctioribus, interna apud apicem angulata, ocellis quinque submarginalibus nigris ochreo cinctis, secundo obsoleto, quarto magno carruleo pupillato, quinto minima argenteo pupillato. Alar subtus pallidiores, lineis duabus mediis apud angulum analem posticarum angulatis, lineis tribus marginalibus fuscis, interna undulata; anticar area apicali ochreo-fusca, fascia lata media fusca, ocellis tribus subapicalibus fuscis ochreo cinctis, infimo majore carruleoque bipupillato ,• posticar area apicali cinerea, fascia media lata fusca ocellisque quinque submarginalibus argenteo-carruleo bipupillatis, primo secundo et quinto nigris flavo cinctis, aliis fuscis flavo cinctis, secundo et quinto majoribus: corpus olivaceo-fuscum, antennis fuscis. Exp. alar. unc. 1-|. Hab. St0 Paulo. B.M. Var, Posticar supra, ocellis parvis, indistinctis. Hab. Ega (Coll. Bates). Allied to E. marpius. It chiefly differs in the number of ocelli upon the upperside, in E. marpius only three being visible in the hind and two in the front wings, in this insect none in the front and five in the hind wings, one of which is, however, very indistinct |