MIMETIC ASSOCIATIONS 



55 



AMAURIS PSYTTALEA. 



Plotz, S. E. Z., xli, p. 189 (1880). 

 Brown (enceladus var.), 111. Zool. p. 18, pi. 9 

 (1776). 



Beauvois {damocles), Ins. Af. et Amer., p. 239, 

 pi. 6, ff. 3a, 3b (1805-21). 



var. datnoclides. 



Aurivillius, Rhop. Aeth., p. 37 (1898). 



Haase (egialea), Bibl. Zool. (8), ii, pi. 4, f. 25 

 (1891). 



Staudinger, Iris, viii, p. 367, pi. 7, f. 3 (1896). 



Plate IV, Fig. 12. Plate V, Fig. 3. 



The example figured on Plate IV was received from Entebbe, but the insect has a very 

 wide range, and occurs from Sierra Leone to German East Africa. I have examined a very 

 long series of the species, and find that it varies considerably in the amount of white on the 

 hind-wings, and in the size of the white spots in the fore-wings, though the relative size and 

 position of these is fairly constant. There is, perhaps, a certain tendency for the white area 

 of the hind-wings to be reduced as we travel westwards, though great variation occurs in 

 the same locality. Two specimens before me as I write, taken at Toro, show extreme varia- 

 tion, one having very little white on the hind-wings whilst the other not only has a large 

 white basal area extending considerably beyond the end of the cell, but has also a very 

 prominent row of submarginal white spots. There is no difference in the markings in the 

 two sexes. The form damoclides is principally characterized by the large white area in the 

 hind-wings, and any of the many varieties with a large white area may be said to approach 

 the damoclides form. 



The hyalites section of the genus may be distinguished from that which includes 

 A. niavius and A. psyttalea, by the presence in the former of a rather wavy and white speckled 

 margin in the hind-wings. The example figured was received from Ogowe in the French 

 Congo, though the species extends to Lake Tanganyika. A closely allied form is A. dannfelti 

 Auriv., which was described from the Congo, and of which several specimens have lately 

 been taken by Mr. Neave, near Lake Bangweolo. A. hyalites acts as a model for P. brasidas, 

 where that insect occurs in Angola. 



This species extends from Sierra Leone to West Uganda, and may be easily recognized 

 by the pecuhar shape of the wings, and the paucity of the white markings. The pattern 

 evidently has considerable influence on certain forms of Hypolimnas dubius, the form 

 damoclina being apparently modified in the direction of this Amauris. The example 

 figured was received from Cameroon. 



AMAURIS HYALITES. 



Butler, Cist. Ent., i, p. 209 (1874). 



Aurivillius {difficilis), Ent. Tidskr., xii, p. 194, 197 (1891). 



Swinhoe (egialea), Journ. Linn. Soc. Zool., xxv, p 343, pi. 17, f. 6 (i8g6). 



Aurivillius, Rhop. Aeth., p. 38 (1898). 



Plate IV, Fig. 10. 



AMAURIS HECATE. 



Butler, Proc. Zool. Soc, p. 44 (1866). 



Doubleday and Hewitson (niavius), Gen. Di. Lep., pi. il, f. 3 {1847). 

 Aurivillius, Rhop. Aeth., p. 39 (1898). 



Plate IV, Fig. 14. 



