Mr. II. II. Druce on new Species o/Lycasnidae. 29 



10. Iolaus menas, sp. n. 



<$. Upperside. — Fore wing brilliant light blue, near /. 

 iastSj Hew., in colour • apex and outer margin black, ex- 

 tending to the lower median nervule ; costal margin narrowly 

 black except at the base. Hind wing blue as above, the outer 

 margin from the apex to the anal angle very narrowly bor- 

 dered with black ; a large triangular patch of thick black 

 scales commencing just above the subcostal nervure and 

 extending outwards along about one third of the first subcostal 

 nervule and downwards to the blue ; the costal margin 

 shining greyish. 



Underside. — Fore wings pure white. Hind wings much as 

 in I. iulus, Hew. 



? . Upperside. — Fore wings pure white, with the costal 

 margin, the apical third, and the outer margin blackish brown, 

 which extends to the posterior angle ; the base suffused with 

 light blue, extending well into the wing. Hind wing pure 

 white, with the apex blackish brown and a well-marked dark 

 line extending from the apex to the inner margin just above 

 the lobe ; beyond this and close to the margin a row of 

 blackish markings reaching from the apex to the second 

 median nervule ; the lobe brick-red, with a black spot and a 

 few metallic blue scales ; a large bright orange spot, bordered 

 inwardly and outwardly with brown between the first and 

 second median nervules, and another smaller orange spot 

 between the submedian nervure and the first median nervule ; 

 suffused with blue at the base, but not to the extent of the 

 fore wing. 



Underside pure white, in some specimens a slight indi- 

 cation of an outer-marginal line to fore wing. Hind wing- 

 as in male, but the red spot between the first and second 

 median lighter in colour. 



Head white ; thorax bluish ; abdomen white ; legs white j 

 palpi white, tipped with black. 



Expanse, <$ If, ? 2 inches. 



Bab. W. Africa, Gambia. 



The orange spot betAveen the submedian nervure and the 

 first median nervule on the hind wing of female above appears 

 somewhat variable, as in some examples it is very small and 

 in others replaced by a blackish mark. The female of this 

 species bears a close resemblance to the female of /. ismenias, 

 Klug (which is exactly like the male with the exception of 

 the scaly patch on the hind wing at the base of the median 

 nervules), from which it is distinguished by the well-marked 

 inner line on the hind wing above, by the greater suffusion 



