Experiments ujpon ACiiiEA encedon. 



39a 



Since the appearance of Eltringham's monograph much evidence has 

 accumulated proving beyond doubt the strong development of the white- 

 hind-winged alcippina form in the interior of Sierra Leone, from which 

 area it is probably continuous into N. Nigeria. The following list of examples 

 of alcippina and its model alcip>pus, recently received by the British Museum 

 of Natural History, has been kindly prepared by Mr. N. D. liiley, F.E.S. 

 The extraordinar}- predominance of the female alcippina over the male — 

 50 to 5 — strongly suggests the prevalence of all-female families such as 

 Mr. W, A. Lainborn finds in the Lagos district. 



Dated examples of Danaida chrysippus, f. alcippus, and Acrsea encedon, 

 f. alcippina in the British Museiim, from Sierra Leone and 

 N. Nigeria. 

 I. — Sierra Leone. Collected by J. J. Simpson. 



D. chrysippus, A, encedon, 



f. alcip2)us. f. alcippina. 



I ^ ^ ^ ^ 



14J - _ _ 



5J - _ _ 



Kambia. 



Bassia. 



Kokona. 



Yana. 



Laminaia 



Port Lokko. 



Batkam. 



Kafogo. 



Kaballa. 



Benikoro. 



Falaba. 



Tirikoro. 



Keneura. 



Bumbanya. 



Jobanna. 



Giema. 



Jowati. 



Gigbema. 



Bo. 



Mafwe. 



24 iii.1912. 



25. iii. „ 



26. iii. „ 

 30. iii. „ 



23-25. iv. „ 



9-11. V. „ 



15-18. V. „ 



23. V. „ 



- 27. V. „ 



30. V. „ 



1. vi. „ 



15-17. vi. „ 



20. vi. „ 



22. vi. „ 



28. vi. „ 



6, viii. ,, 

 19. viii. ,, 

 22. viii. „ 



1. ix. „ 



7. X. „ 



5J 

 IJ 



4c? 



19 

 5$ 

 2? 



- 1? 



Id 

 Id 



15 



Id 

 1$ 



4c? 

 5d 



II.— N. Nigeria. Collected by G. T. Fox. 



Panyam. 

 (Banchi Prov.). 



Totals 



2. vi.l910. — 



3. vi. „ — 



4. vi. „ — 

 31. vii. „ — 

 13. viii. „ Id 



32 



2? 

 1? 



Id 



Id 



1? 



1? 

 1? 



1? 



1$ 

 38? 



2? 



1? 

 1? 



.... 56d 15$ 5d 50$ 



In addition to the above, the British Museum Collection contains a single 

 undated female alcippina from Panguma, N. Nigeria, another undated 

 female from 70 miles up the river from Freetown, Sierra Leone, and an 

 undated male from Liberia. 



