616 MR. H. H. DRUCE OX BORXEAX LYC.TXID.^:. [Juiie 18, 



near the costa and becoming more distinct towards the sub- 

 median nervure, on which it broadens into an irreguhir spot. 

 Hind wing with a similar faint wavy line beyond the middle, 

 starting on the costa and running nearly straight to the second 

 median nervule, ^here it turns at right angles, and becoming 

 suddenly darker and thicker reaches almost to the anal margin 

 just before the extremity of the abdomen ; a large black spot on 

 the lobe crowned with metallic green ; a black mark between the 

 submedian nervure and another joining it between the two lower 

 median nervules, both covered with metallic green scales ; a thin 

 black marginal line above the lobe, runnmg; into the dark band, also 

 dusted with metallic green ; dark auteciliary Hues towards the 

 anal angle. Cilia of fore wing dark brown, of hind wing pale 

 brown at apex, nearly white towards anal angle. Tails on both 

 surfaces unmarked. Head, thorax, abdomen, and legs concolorous 

 with wings ; tarsi black-spotted. 



2 . Differs from the male only by upperside being rich dark 

 brown in place of purplish blue, and the anal region pure white 

 in place of cream-white. Underside as male, but the pale brown 

 replaced by rich ochreous brown. 



Expanse, cJ Iro' 2 If inch. 



Kina Balu (Waierstr.). 



1 have named this fine species after Dr. Staudinger, whose 

 kindness and generosity have enabled me to describe and figin-e it 

 here. The types are iu his collection. It is not a little remark- 

 able in that both sexes are nearly alike on the upperside, the 

 female only differing from the male by being brown in place of 

 blue. The third (upper) tail is very slightly developed in the 

 male, but is well marked in the female. B. staudinyeri is not 

 closely allied to any other species. 



BiDCAXDA SIMILIS, Sp. n. 



(5 . Upperside — fore wiug dark rich brown ; hind wing shining 

 cserulean blue, with brown apex and costal margin, two black spots 

 near anal angle ; cilia of fore wing brown, of hind wing white. 

 Underside — fore wing reddish orange with brown markings ; hind 

 wing white, with dark brown markings and bands, reddish along 

 the costal margin and dusted with shining silvery green scales 

 towards the anal angle. Outer margin of fore wing more convex, 

 about equal to that of M. moorei $ . 



Expanse ly^ inch. 



Borneo. Type Mus. Druce. 



This butterfly differs from the common Marmessus moorei. 

 Distant, with which it occurs, only by the presence of an additional 

 subcostal nervule, and by the outer margin being more convex. 

 The type specimen, so far as I know, is unique, as after examining 

 a large series of M. moorei I have failed to find another example. 

 This specimen, together with the type of B. imitata, mihi, next 

 described, was formerly in the Eev. E. P. Murray's collection, but 

 ■ unfortunately the precise locality in Borneo is not noted. 



