64 MR. S. A. XtiAVG ON BUTTERFLIES [Jan. 18, 



.specially characterised on the underside by a violaceous wash 

 on the apex of the primary and over the whole of the secondary. 

 This wash fades after death to a warm greyish. The vermilion 

 costal streak is intensified, but the orange-yellow basal flush and 

 black marginal spots are much reduced. 



The females of this species are of a pale yellowish colour with 

 very heavy black margins to both wings. In some specimens the 

 only spots of upperside of secondary, not merged in the margin, 

 are those in areas 5 and 6. In one individual, the ground-colour 

 on both surfaces is of a bright orange. In wet -season specimens, 

 the orange-yellow flush of the under surface is very extensive, 

 sometimes in the secondaries extending over nearly the whole 

 wing. The dry-season phase has the same characteristic difference 

 as in the males. 



This species, which is described from 67 males and 5 females, 

 occurred pretty commonly through the western portion of 

 Northern Rhodesia from the Kaf ue river as far north as Lake 

 Bangweolo and throughout Katanga. It is most common in 

 the more open parts of high plateau country, and is frequently 

 seen at damp mud, the females usually occurring in the denser 

 woodland. 



Belenois thysa Hopff. 



A common species in Katanga, much less so in JST.E. Rhodesia. 

 Usually frequents woodland. 



PlNACOPTERYX SIMANA Hopff. 



This species is common in the low-lying parts of the Luangwa 

 valley, iv.-ix. It frequents thickets and is particularly numerous 

 in hot and dry country. 



PlNACOPTERYX ASTARTE. 



Pinacopteryx astarte Butler, P. Z. S. 1899, p. 971, pi. lxx. 

 figs. 6, 7. 



I have a long series of this species, the identification of which 

 I owe to my friend Dr. Dixey, taken at all seasons throughout 

 the ai"ea under discussion. The series includes those specimens 

 mentioned by Dixey in Proc. Ent. Soc. 1907, pp. lxv, lxvi. The 

 females, especially the wet-season ones, are exceedingly difficult to 

 distinguish from Mylothris agathina Cram., when on the wing. 



Teracolus chrysonome Klug. 



Only represented by two males captured in the upper 

 Chambezi valley, iv., and one lower down the same valley, x. 



Teracolus vesta Reiche. 



This species usually occurs in hot low-lying localities and is 

 rare on the high plateau. 



