368 SOUTH-AFRICAN BUTTERFLIES. 



Region. Only one si3ecies is known from the Palsearctic Eegion/ 

 iuhabiting Vladivostok on its extreme east. The Australian Eegion 

 appears to have yielded sixteen, and the Ethiopian Eegion nineteen 

 species. Of the last named, four appear to be peculiar to Madagascar, 

 and one {Arhogastcs, Guen.) to Madagascar and E^union. The five 

 found in South Africa are Forestall, Cram. ; Pisistratus, Fab. ; Anchises, 

 Gerst. ; Keithloa, Wallengr. ; and Unicolor, Mabille. The first and 

 second of these scarcely differ from each other on the upper side, but 

 on the under side of the hind-wings the white band is in Pisistratus 

 marked with three black spots. Anchises also presents this black- 

 spotted white band, but has also two orange-red spots ; while Keithloa 

 has no white bands, but vivid orange-red spots. In Unicolor, which is 

 considerably smaller and darker, there are no markings on either side 

 of the wings. Forcstan and Pisistratus range very widely through 

 Tropical Africa, the former also reaching Madagascar and Mauritius ; 

 Anchises appears to be chiefly East-African, and has been recorded 

 from Aden ; Unicolor was first described from Congo specimens ; 

 and Keithloa is not known to me to have occurred beyond South- 

 African limits. All five species inhabit the eastern side of South 

 Africa ; and Forestan and Keithloa penetrate as far to the south and w^est 

 as Port Elizabeth in the Cape Colony. Anchises has been received 

 from Delagoa Bay only ; Unicolor from that place and Natal. 



The three species I have observed in life {Forestan, Pisistratus, 

 and Keithloa) have a rapid but hustling flight, reminding one, though 

 much quicker, of that of such Noctuai as Plusia and allied genera. 

 Owing to their constant visits to flowers, they are not difficult to 

 capture ; when settled, they hold the wings erect, the hind pair being 

 kept, however, a little more open than the fore-wings. 



374. (1.) Hesperia Forestan, (Cramer). 



Papilio Forestan, Cram., Pap. Exot., iv. pi. cccxci. IF. e, f (1782). 

 $ $ Isniene Florestan, Trim, [part], Rhop. Afr. Aust., ii. p. 318, n. 213 

 (1866). 



Ex}-). al., {$) 2 in. — 2 in. i lin. ; ($) 2 in. 2-3 lin. 



$ Pull pale greyish-hroivn, darker in hind-iviiig ; fore-wing with a 

 slight tinge of yelloivish-grey lasally, hind-iving with a hasi-mediaii pale 

 oclireous-yclloiv p)atch. Fore-wing : paler about middle ; some greyish- 

 yellow hairs at base and on inner margin. Hind-wing : much darker 

 (almost black) at and near anal angle ; central and inner-marginal area 

 thickly clothed with pale ochreous-yellow hairs, mixed with greyish near 

 base. Under side. — Smoother, sometimes unth a faint violaceous gloss. 



1 Of this species, //. {Ismcne) Aquilina, Speyer (Stett. Ent. Zcit., 1S79, p. 500) notes that 

 it is one of the few Hcsperidcc that exhibit a sexual distinction in the neuration ; the second 

 median nervule of the fore-wings originating in the i nearer to the first than to the third, 

 but in the 9 just the reverse. 



