130 Bulletin American Museum of Natural History [Vol. XLIII 



(58) 31. Acrsea egina (Cramer) 



Papilio egina Cramer, 1775, Pap. Exot., I, p. 64, PI. xxxiii, figs. F, G. 

 Acrosa egina Aurivillius, 1913, Seitz, Gross-Schmett., XIII, p. 279, PI. Livd. 



Eight males and one female. The female was captured at Gamangui 

 in February. The males were taken at Kwamouth, Avakubi, Munie 

 Katoto, Medje, and Niangara. The dates of capture run from July to 

 November. 



(59) 32. Acrsea zetes (Linnaeus) 



Papilio zetes Linn^us, 1750, Syst. Nat., 10th Ed., p. 487. 



Acroea zetes Aurivillius, 1913, Seitz, Gross-Schmett., XIII, p. 280. 



There are six males and two females from various localities. One 

 female was taken at Gamangui in February; three specimens were 

 caught at Medje from July to November; and three at Niangara in 

 November. Typical A . zetes (Linnseus) with the fore wings almost solidly 

 black is represented by a male taken at Risimu, September 8, 1909. 

 Such specimens are most often found in material from South Africa. 

 All the other specimens in the present collection belong to the varietal 

 forms ^. menippe (Drury) and A. jalema Godart, which are connected 

 by intergrading forms. 



I have in mj^ possession a long series of specimens bred at Kangve 

 on the Ogove River by the late Dr. A. C. Good. He found the larvae 

 feeding gregariously, and, as specimens sent me reveal, these insects 

 in no respect differed from each other either in the larval or pupal stages. 

 The brood consisting of males and females, represented everj^ varietal 

 form running from typical Acrcea zetes (Linnaeus) through Acrcsa menippe 

 (Drury) to Acrcea jalema Godart. The latter, as has been pointed out 

 by Professor Aurivillius, seems to constitute a connecting link between 

 the West African races and the East African form named Acrcea acara 

 Hewitson. Some of the specimens of A. jalema Godart contained in 

 this brood very closely approximate males of Acrcea acara, of which I 

 have many from Mombasa, with the difference that no specimens from 

 the French Congo show the white squamation in the middle of the hind 

 wing, which is characteristic of all the males of A. acara, and the sub- 

 apical band of the fore wing is invariably narrower than in the East 

 African form. There is, however, a decided difference between the 

 females from the west coast and the east coast. The females of A. acara, 

 of which I possess a considerable number, are smaller in size and not as 

 brilliantly colored as the West African females, and the subapical white 

 band of the fore wings is much broader and more diffuse than in the 

 West African form. 



