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Show 4 MR. GUY A. K. MARSHALL ON THE [Jan. 19, number of specimens of Teracoli, which I trust will minimise any probability of error in the conclusions at which I have arrived. Among the collections which I have seen I may mention those of Messrs. J. M . Hutchinson and C. N . Barker in Natal, that of the South-African Museum in Capetown, and those of Mr. Trimen and Miss E. M . Sharpe in London. To the latter lady I am further indebted for having kindly permitted me to examine several collections from Central East Africa which are in her charge, and notably the fine series of Teracoli collected by Mr. F. J. Jackson, which are of more than ordinary interest owing to the careful way in which the locality and date of nearly all the specimens are recorded, details which are painfully lacking in most collections. But this paper is chiefly based on the magnificent series of this genus contained in the British Museum, which possesses a very large number of type specimens, and I have to thank Mr. Butler for his courtesy in affording me every facility and assistance in his power. With regard to the Asiatic species I have only seen those in the British Museum, which seem to thoroughly bear out the conclusions arrived at by Capt. E. Y. Watson in his most interesting paper on the Indian Pierince (Journ. Bomb. Soc. 1894), and these conclusions I have entirely adopted, as they are in complete accord with my experience in South Africa. I have followed Mr. Butler and Mr. Trimen in including Idmais and Callosune in the genus Teracolus, for the species contained in the three genera are so closely connected as to render it impossible to draw any hard-and-fast line between them ; and a multiplication of ill-defined genera appears to m e to be in every way undesirable. As regards the arrangement of the species, the affinities of so large and varied a genus cannot be properly shown in linear form ; and although the order which I have adopted may be open to objections, it gives a fair idea of the relationship of the species. The genus Teracolus reaches its fullest development along the Eastern side of Africa, where all the largest and handsomest species are found; it ranges thence eastward through Arabia into N. India, in both of which areas it is fairly well represented, but becomes much scarcer in Central and South India, Ceylon being its southern limit. In Africa it ranges across the Continent to the West Coast in the South-Tropical and Extra-Tropical belts, and has been recorded along that side as far north as Senegal. In this paper I provisionally recognize 72 species of Teracolus, of which 61 are Ethiopian and 19 Oriental, eight species being common to the two regions. Of these latter one species also occurs in the Pahearctic region, viz. T. evagore, Klug ( = nouna, Luc), which has been recorded from Algeria; and one of the Oriental species also occurs in the Northern region, viz. T. faustus, 01., which ranges into Asia Minor. Of the African species, 55 occur on the mainland one is peculiar to the island of Socotra (T. nlveus, Butl.), and five to Madagascar, viz. T. zoe, Grand., T. mananhari, Ward, T. guenei, M a b T. siga, Mab., and T. evanthe, Boisd. Of the 55 Continental species' |