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Show 40 DR. W. J. HOLLAND ON THE AFRICAN [Jan. 14, TEINORHINUS \ Holl. Neuration of Teinorhinus watsoni, Holl., c3. f • 131. T. WATSONI, Holl. (Plate III. fig. 10.) T. watsoni, Holl. Ann. & Mag. Nat. Hist., Oct. 1892, p. 292. Hab. Gaboon. OSMODES, Wats. This is a well-marked genus, the males of which may be distinguished at a glance by the patch of glandular raised scales located on the secondaries near the cell. The females differ greatly from the males upon the side, and in several species seem to be very closely related to each other in the pattern of the markings. In fact it is in many cases possible to discriminate between them only by paying the most careful attention to small points of difference, and by having specimens taken in coitu. Fortunately I have been able to satisfactorily solve most of the puzzling problems which the difference of the sexes present, thanks to the possession of vast series of specimens, carefully collected and accompanied by satisfactory observations in the field. It may be said that it seems to me that there is strong probability that several of the species are dimorphic. But further research upon the ground is necessary to establish this supposition. 132. O. LARONIA, Hew. (Plate IV. figs. 1 rf , 2 $ .) 0. laronia, Hew. Descript. Hesper. p. 35 (1868). Plastingia laronia, Ploetz, S. E. Z. vol. xl. p. 356 (1879), vol. p. 145-6 (1884). Osmodes laronia, Wats. P. Z. S. 1893, p. 78. Hab. Gold Coast, Gaboon. This species is labelled Plastingia bicuta by Mons. Mabille in Dr. Staudinger's collection, but the name has never been published. 133. O. THORA, Ploetz. (Plate IV. figs. 3 <3, 5 $ .) Plastingia thora, Ploetz, S. E. Z. vol. xlv. p. 145 (1884) Osmodes thora, Wats. P. Z. S. 1893, p. 79. Hab. Guinea (Ploetz), Gaboon (Good). 1 by a misprint in the ' Annals,' originally published as " Te?iiorkinus." |