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Show 260 DE. A. G. BUTLEB ON LEPIDOPTEBA [Mar, 19, together, but with slight variations in the different species ; lower discocellular of secondaries better defined. All other characters are inconstant, such as the relative position and length of furca of the subcostal branches of the primaries, the form of the praecostal veinlet of the secondaries, the stoutness of the antennae, the length and uprightness of the palpi, and the robustness of the thorax; they serve only to distinguish the species. From Crenis, apart from its totally different outline, broader wings, and utterly dissimilar style of coloration, Metacrenis differs in the longer and cylindrical club to the antenna?, the less strongly inarched discocellulars of the primaries, and the broader and less produced discoidal cell of secondaries. The position of the praecostal veinlet differs greatly in M. crawshayi and M. rosa-being emitted as in Hamanumida in the former, and as in Crenis natalensis in the latter: in fact, if all the structural characters were to be regarded as of generic value, these two evidently allied species would have to be widely sundered, the first being placed nearer to Hamanumida, the last to Crenis. 36. METACEENIS CEAWSHAYI. . 3 . Crenis crawshayi, Butler, P. Z. S. 1893, p. 654, pi. Ix. fig. 5. 2 . Approaches Hopffer's figure of his M. concordia (Peters's Eeise, Zool. v. p. 391, pi. 22. figs. 3, 4, 1862), but the groundcolour above is bright rosy-lavender, with all the black spots much more elongated; the primaries show two little diffused white dashes instead of the oblique yellow bar of M. concordia and all the other yellow shades are wanting, but the nervures between the discal and submarginal series of spots have rufous-brownish borders and the spots themselves are connected by blue-grey streaks: below, the colouring is much brighter than in Hopffer's figure, the black spots are elongated; the first four discal spots of the primaries are connected by blue longitudinal streaks with the submarginal spots ; there is no continuous blue border on any of the wings, but only small marginal blue spots as in m y figure of the male. Expanse of wings 69 millim. One female, Fwambo. Hopffer's figures of M. concordia, if intended to represent this species, are so bad that it is no marvel that (with the book on my table) a cursory glance at the plate failed to save me from committing what m y friend Trimen assures m e is a grievous blunder. In the first place, Hopffer described bis species as a Harma and in Kirby's ' Catalogue of Diurnal Lepidoptera' it remains in that genus under its emended title ; so that, in looking up the known species of Crenis, I naturally did not have my attention particularly called to it. W h e n Mr. Trimen, with his wide knowledge of African Butterflies, assured m e that m y species was a synonym oi' Hopffer's, I again looked at tbe figure and concluded that he was correct; but, with the female of M. crawshayi before me, I feel certain, when we see M. concordia, that we |