( xxiv ) 



('• Rhop. Aef li.." p. 292). Some of t he specimens in the British 

 Museum were undoubtedly conspecific with the type exhibited 

 to the meeting, but it would be necessary to obtain anatomical 

 data, before deciding that the whole series labelled posthumus 

 was made up of the variable individuals of but a single 

 species. 



Since the above paragraph was written the question has 

 been settled. In a considerable series of specimens like that 

 of the British Museum two groups may be distinguished, 

 especially recognisable by the differences on the hind-wing 

 under surface. 



Group 1, including the majority of the specimens. The 

 hind-wing under surface has a golden iridescent ground- 

 colour, and is traversed by long white nervular and inter- 

 nervular streaks, the latter like spear-heads in the areas round 

 the end of the cell. These markings usually extend from 

 areas 2 to 7 and are sometimes also seen (of linear form) in 

 la, lb, and lc. In some individuals they are yellowish and 

 in some, probably worn, they cannot be traced. 



Group 2. In this, the smaller group, the iridescent ground- 

 colour is richer and darker in tint, often deep purplish in 

 certain lights. The white markings are represented only by 

 the spear-heads and nervular streaks of areas 2, 3, and 4, or 

 si uiie of them. The e reduced )»ale markings are far more 

 conspicuous against the dark ground than the inure numerous 

 and fully developed markings of Group 1. The line of the 

 median in most specimens of Group 2 marks sharply the edge 

 of a dark streak dividing the hind-wing under surface into 

 two sections. In the darker specimens this streak is deep 

 blue in certain lights; in the less dark it is purplish. This 

 character is especially strongly marked in the males, occasion- 

 ally evanescent in the females. On the upper surface the 

 males are also distinguished by a greatei development of 

 black' at t he apex of 1 he lore-wing and in the hind by a broader 

 black margin increasing in breadth towards the apex; the 

 females commonly possess a series of very variable blue spots 

 extending from the mid costa towards the centre of the outer 

 margin. 



The male type of elion, Doubl.and Hew,, from Ashanti, and 



