542 Neio Forms of African Lepidoptera 



hinuguana Sin., from. East Africa and Nyasaland. They all agree in 

 possessing the three subcostal spots on the fore wing characteristic of the 

 male. The lower one of the three spots is usually separated from the 

 upper discal spot, but in one female from Nyasaland it is separated only 

 by the vein, and in one other from Nyasaland, of the brown form, these 

 spots are all joined. The latter specimen bears a strong resemblance to 

 the female of hirundo, but there is a distinct difference. In hirundo the 

 band of the fore wing is broader, less irregular on its inner edge than in 

 pluto, its outer edge defined by a pale angulate line, whereas in pluto 

 there is always a distinct row of oval marks enclosing black spots, 

 similar but smaller spots without distinct rings being present in 

 hirundo. On the hind wing the band is broader in hirundo, and pos- 

 teriorly not sharply defined from the paler inner margin. On the 

 underside of the fore wing in hirundo there is a grey-white subapical 

 patch above the submarginal lunule in cellule 5. This patch is present 

 in all the males of hirundo we have examined, and is absent in pluto. 



Having definitely ascertained how the females of these two species 

 may be distinguished, we have no hesitation in assigning to pluto the 

 female described .by Schultze as hirundo ("Arch. Naturg.," Abt. A, 112, 

 p. 139, 1916) and figured by him in " Ergb. der Zweit. d. Zentr. Afr. 

 Exp.," Bd. i, t. xxxii, fig. 6, 1920. This specimen is not very different from 

 Nyasaland examples, but has a broader band, whilst the three subcostal 

 spots on the fore wing are more linear in shape than in any eastern 

 examples. 



The typical female of hirundo from West Africa is at present 

 unknown to us, and judging by the results of collecting, this appears 

 to be the rarer species. 



Satyeidae. 



5. Mycalesis aurivilli Btl. kivuensis subsp. nov. 



It is generally unwise to found a race on a single specimen, but 

 considering the differences usually presented by the fauna of Kivu and 

 that of East Africa, the probabilities are in favour of this being a race 

 rather than an individual aberration. 



<£ . Upperside without the white subapical spot or band of the 

 typical form. The white band on the hind wing is extended slightly 

 distad, and is indicated above vein 6 and below vein 3 by some sparse 

 scaling mixed with brown. 



Underside of fore wing with the white band straighter and narrower, 



