Forms of South-African Butterflies. 65 



a slight pinkish tinge. Under-side. — Fore-wing : fuscous not so 

 dark ; rufous-fulvous costal and inner-marginal borders paler, 

 iiTegularly widened in parts and confluent at base ; apical-hind- 

 marginal border widely creamy, traversed by inter-nervular rays 

 like those on upper-side but narrower. Hind-uying : fuscous broken 

 and macular in basal and inner-marginal areas, and blacker, — the 

 ground-colour there being pinkish-red ; oiiter half of discoidal cell 

 creamy ; mesial neuration conspicuously and diffusedly creamy, 

 penetrating fuscous area to beyond middle ; hind-marginal series of 

 seven large well-defined broad creamy-whitish lunules. 

 Exp. at. 1 in. 11 lin. 



The example here described belongs to the darker variety 

 of A. aglaonice described by me in Proc. Zool. Soc. Lond., 

 1894, p. 27, and pronounced by Mr. G. A. K. Marshall 

 (Trans. Ent. Soc. Lond., 1896, p. 555) to be the summer 

 form of the species ; but so completely altered is its appear- 

 ance by the intrusion and singular distribution of the 

 smoky-black suffusion, and the almost entire suppression 

 of the ordinary black spots, as well as by its unusually 

 small size, that, had it not been for the exact agreement 

 Avith the $ aglaonice in the colouring and marking of 

 head, thorax, and abdomen, I doubt whether I could with 

 confidence have referred it to that species. It was taken 

 at Melville, a suburb of Johannesburg, Transvaal, by Mr. 

 G. T. Weeks, on the 7th May, 1904. 



The range of this Acrxa extends from Southern 

 Matabelelaud to Eastern Mashonaland and Delagoa Bay, 

 and also through the Transvaal as far south as Johannes- 

 burg and eastward to the Lydenburg district, and it further 

 includes Delagoa Bay, Zululand, and (apparently very 

 exceptionally) Natal. 



Mr. Feltham, writing to me in June 1904, made the 

 following interesting remarks on the winter appearance of 

 A. aglaonice and certain other Acr/UcV at Johannesburg. 

 "We are just now, in the depth of the cold weather, having 

 an irruption of newly-emerged butterflies of this species. 

 They have been with us for the last month, and are 

 scattered generally, but singly (not in quantities) about the 

 hills and even in the streets. The same thing happened 

 about nine years ago, also in mid-winter, when frost is on 

 the ground in the mornings and most butterfly life has 

 disappeared. In 1894, also in winter, we had a great 

 incursion of Acnva luxtoni, in weather so cold that the 



TRANS. ENT. SOC. LOND. 1906. — PART I. (MAY) 5 



