74 Dr. A. G. Butler on 



17. Atella columhina, Cram. 

 Chinde, 29th March, 1899. 



18. Acrcea cabira, var. apecida, Oberth. 



MandaLi, 10th April, 1899. 



There is not the slightest question as to this being a mere 

 sport of A. cahi'ra ; we have a complete series of intergradcs 

 in the Museum collection. 



19. Acrcea serena, var. Buxtoniy Butl. 

 Chinde, 29th March ; Mandala, 10th April, 1899. 



20. Acrcea Douhledayi, Gudrin. 



^ ? , between Katunga and Mandala, 8th April ; ^ , Man- 

 dala, 10th April, 1899. 



When I rearranged the Museum collection of Old- World 

 Acr^einffi I considered my A. nero to be a race of this species, 

 the male received with my typical female from Victoria 

 Nyanza being quite like that sex of A. Douhhdayi, excepting 

 that the internervular streaks, terminating in two spots, are 

 wanting from the primaries of A. nero. Since that time we 

 have received other males more richly coloured and with the 

 apical black patch on the primaries varying immensely in 

 width, one example showing a patch similar to that in A. cal- 

 darena. In his recently published important work entitled 

 * Rliopalocera -3^thiopica,' my friend Prof. Chr. Aurivillius 

 has sunk A. nero as an aberration of the female of A. calda- 

 renn (the male being evidently unknown to him); had ho 

 possessed males, and especially that form which most nearly 

 approaches A. caldarena, he would have seen that the broken 

 series of spots on the disk of the primaries is thrown much 

 further back towards the base in A. tiero, the two lower spots 

 forming an inner scries with the discocellular spot, whilst the 

 three outer ones form a much more oblique series considerably 

 more remote from the apical patch. A. nero is, in fact, a 

 separate species, perhaps rather more nearly related to 

 A. caldarena than to A. Douhhdayi, but perfectly distinct 

 from both. 



21. Acrcea violarum^ var. asema, Hewits. 

 Mandala, lltli April, 1899. 



