12 MR. S. A. NEAVJE ON BUTTERFLIES [Jan. 18, 



open. It flies very high for an Acrcea and may often be seen 

 sailing to and fro over the same spot some 10-12 feet from the 

 ground. 



ACRiEA ZETES L. 



I found typical zetes common in Katanga, iii. to v., and again, 

 x., xi. In Northern Rhodesia I took only a single male, viii., on 

 the high plateau country to the south of Lake Tanganyika. 



ACRCEA ZETES ACARA Hew. 



I found this form replacing the typical one in the Lake 

 Bangvveolo district, Chambezi and Luangwa valleys, and the 

 districts of the upper Kafue in N.W. Rhodesia. It seems to 

 frequent rather more open country than the type form, which 

 affects rather dense woodland or forest. It occurs at all seasons. 



ACR^E.4 ASTRIGERA. 



Acrcea astrigera Butler, P. Z. S. 1899, p. 421, pi. xxv. fig. 5. 

 I met with a few individuals of this species on the Mansya 

 river near Lake Young at the beginning of November, 1908. 



ACR^A ANEMOSA Hew. 



A common insect during the wet season in the Luangwa 

 valley. West of the Mchinga escarpment I took only two 

 specimens, viz., in the Broken Hill district, ix. and xi. Both 

 these approach the arcticincta form of Butler and have the 

 spots of the fore wing much enlarged. To the north and west 

 of these localities anemosa appears to be replaced by the next 

 species. It has a very lazy flight and is easily captured. It 

 frequents woodland. 



Acilea avelwitschi Rogenh. (Plate I. fig. 2, J .) 



I first met with this little-known insect on the upper Kafue river, 

 N.W. Rhodesia, in October 1905, but took only a single female. 

 Subsequently in Katanga I took four males on the Lualaba 

 river, v., and a worn female on the Lubudi river, x. Even- 

 tually in 1908 I found it swarming in the Lake Bangvveolo district, 

 a new brood having obviously just emerged about the middle of 

 June. I continued to take many specimens, some much worn, in 

 the Kalungwisi and Lofu river valleys up to the middle of 

 September. Strange to say, females appeared to be very rare 

 amongst this dry-season brood until the end of September and 

 during October, when all of the few individuals captured were 

 females. 



This large Acrcea with its brilliant cerise coloration and heavy 

 black margins is an extremely conspicuous object on the wing. 

 It seems, as I shall endeavour to show later, to have influenced 

 the pattern of other Acrseas in the same neighbourhood. 



As the species is so little known in collections and the male 

 seems to be undescribed, it is perhaps as well to give a full 



