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Show 1896.J BUTTERFLIES OF THE FAMILY HESPERIIDvE. 97 allied to the insects belonging to that section of the genus which contains R. unicolor, Mab., and R. libeon, Druce, but thoroughly separate from them by reason of the different structure of the palpi and the antenna?. 319. A. DIMIDIA, sp. nov. (Plate V. fig. 7.) 3. Antenna?, body, and wings both above and below uniformly dark brown, with a slight greenish sheen on the disc of the primaries when viewed in strong sunlight. The palpi on the lower side are orange-coloured. Expanse 40 mm. Hab. Gaboon (Mocquerys). The type of this insect is contained in the collection of Dr. Staudinger and is unique. On comparison with A. holocausta, Mabille, the chief points of difference are the smaller size and the more obscure colouring, for A. holocausta has the primaries and secondaries somewhat plentifully sprinkled with golden-orange scales near the base, and the general coloration is brighter. There is no doubt in my mind as to the specific distinctness of this form upon comparison. The facies is quite distinct, though the species are very closely related. RHOPALOCAMPTA, Wallgr. 320. R. RAMANETEK, Boisd. Thymele ramanetek, Boisd. Faune Entom. Madgr. p. 62, pi. ix. fig. 3 (1833). Ismene ramanetek, Kirby, Syn. Cat. p. 581 (1871); Mab., Grandid. Madgr. vol. xviii. p. 326, pi. Ii. figs. 2,2 a (1887). Rhopalocampta ramanetek, Watson, P. Z. S. 1893, p. 129. Hab. Madagascar. 321. R. UNICOLOR, Mab. Ismene unicolor, Mab. Ann. Soc. Ent. France, (5) vol. vii. p. xxxix (1877); Bull. Soc. Zool. France, 1877, p. 230. Hesperia unicolor, Trim. S. Afr. Butt. vol. iii. p. 375. Hab. South Africa, Western Africa as far north as Liberia. Very common on the Ogove River. 322. R. LIBEON, Druce. Ismene libeon, Druce, P. Z. S. 1875, p. 416. Hesperia libeon, Trim. S. Afr. Butt. vol. iii. p. 375. Rhopalocampta libeon, Watson, P. Z. S. 1893, p. 129. Hab. Angola (Druce). Closely alhed to R. unicolor, Mab. 323. R. BRUSSAUXI, Mab. Ismene brussauxi, Mab. Bull. Soc. Ent. France, 1890, p. ccxxi. Hab. French Congo (Mabille). This species was described by Mons. Mabille from a defective example. It is evidently very near R. libeon and R. unicolor. PROO. ZOOL. Soc-1896, No. VII. 7 |