40 •' DB. W. J. HOLLAND ON THE APHIOAN [Jail. 14, 



Tbinokhinus ', lloll. 



Neuration of Tcinorhinus watsoni, Holl., cJ . f . 



131. T. WATSONI, Holl. (Plate III. fig. 10.) 



• T. watsoni, Holl. Ann. & Mag. Nat. Hist., Oct. 1892, p. 292. 

 Hab. Gaboon. 



Os MODES, Wats. 



• This is a well-marked genus, the males of which may be distin- 

 guished 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 tlie possession of vast 

 series of specimens, carefully collected and accompanied by satis- 

 factory observations in the field. It may be said that it seems to 

 me that there is strong pi'obability that several of the species are 

 dimorphic. But further research upon the ground is necessary to 

 establish this supposition. 



132. O. LAEoNiA, Hew. (Plate IV. figs. 1 <J , 2 ? .) 

 0. laronia, Hew. Descript. Hesper. p. 35 (1868). 



Plastingia larmiia, Ploetz, S. E. Z. vol. xl. p. 356 (1879), vol. xlv. 

 p. 145-6 (1884). 



Osmodes laronia, Wats. P. Z. S. 1893, p. 78. 



Bab. Gold Coast, Gaboon. 



This species is labelled Plastingia bicuta by Mens. Mabille in 

 Dr. Staudinger's collection, but the name has never been published. 



133. O. THOEA, Ploetz. (Plate IV. figs. 3^,5$.) 

 Plastingia thora, Ploetz, S. E. Z. vol. xlv. p. 145 (1884). 

 Osmodes thora, AVats. P. Z. S. 1893, p. 79. 



Hab. Guinea (Ploetz), Gaboon {Good). 



' ii; a misprint in the ' Annals,' originally publislied as " Teniorhinus." 



