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Show 312 MR. F. MOORE ON LIMNAINA AND EUPLCEINA. [May 1, In both sexes of this species the blue gloss of the fore wing does not extend beyond the submarginal spots; in this respect they approach nearest I. irawada, as they also do in the obsolescence of the marginal rows of spots. Mr. G. Lewis has recently presented specimens of this species to the British Museum, which he found common in Hong Kong flying over the Lantana. 4. ISAMIA SINICA, n. sp. Both sexes have a comparatively more triangular form of fore wing than in typical I. superba ; these wings have similar but less glossy blue, the sericeous streak is shorter, the discal blue spots and the one at end of the cell small, the submarginal series conspicuously larger and whiter, the marginal row also white : hind wing with two rows of whity-brown ill-defined spots. Expanse 3 | to 4 inches. Hab. S. China. In coll. F. Moore. 5. ISAMIA MIDAMUS. (Plate XXXII. fig. 5, cf •) Papilio midamus, Linnaeus, Syst. Nat. ed. x. p. 470 (1758), xii. p. 765 (1767) ; De Geer, Acta Holmia3,ix. p. 209, pl. 6. f. 1, 2, 9 (1748); Ehret, Plantee et Papilion. pl. xi., cf (1748). Papilio midamus (part.), Linn. Mus. Lud. Ulricse, p. 251 (1764) ; Fabricius, Syst. Ent. p. 479 ; Spec. Ins. ii. p. 52 ; Ent. Syst. iii. 1, p. 39. Limnas mutabilis midamis, Hiibner, Samml. exot. Schmett. i. pl. 24. f. 3, 4 (1806), female. Euploea midamus (part.), Butler, P. Z. S. 1866, p. 294. Euplcea superba (part.), Doubleday & Hewits. D. Lep. p. 87; Moore, Catal. Lep. Mus. E.I. C. i. p. 131 ; Butler, Catal. Fabr. Lep. B. M . p. 2; P. Z. S. 1866, p. 271; Kirby, Catal. D. Lep. p. 9. Nearest to I. alopia ; fore wing with larger discal blue spots, comparatively smaller and less prominent white submarginal and marginal spots ; hind wing with a submarginal and marginal row of very small white spots. Expanse 3f to 4 inches. Hctb. S. China, Canton. In coll. F. Moore; British Museum. The identification of the P. midamus of Linnaeus rests entirely on the first published description in the 10th edit, of the ' Systema Naturae.' This description also agrees with the figures (Acta Holm. pl. 6. f. 1, 2), which are those of a female, and which Linneeus therein cites as an illustration, as pointed out by Mr. Butler in his Monograph of Euplcea (P. Z. S. 1866, p. 294). Of Linnseus's other cited illustrations, Ehret's plate xi. also refers to a male of the same species. Here, therefore, we have all that is required for fixing the identity of the species in question ; and I unhesitatingly apply it to the form of the superba group here described. All recent authors, when referring to the P. midamus of Linneeus, |