516 Rev, K. St. Aubyn Rogers' Bionomic Notes on 



The following specimens are figured by Professor Poiilton 

 in Trans. Ent. Soc. Lond., 1906, p. 281. 



F 1 figured in Trans. Ent. Soc. Lond., 1906 : Plate XXII, Fig. 2^. 



F 2 „ „ „ Plate XXI, Fig. 3^ 



F3 „ „ „ „ Fig. 2a. 



F 4 „ „ „ „ Fig. \\ 



F5 „ „ „ „ Fig. 1^ 



F6 „ „ „ „ Fig. 4\ 



The tabulated examples of jiavcscens possessed very 

 pale ochreous spots in the fore-wing, so that it was diffi- 

 cult to distinguish worn specimens from froUiiia with its 

 white spots. Omitting the consideration of fallax, which 

 may be a distinct species, it is seen by this list that 

 semifulvcsccns is by no means rare as compared with the 

 other two forms. 



[So far as this comparatively short list enables us to 

 ^ndge, fidvesceois is nearly half as numerous and scmi/ul- 

 vcscens about a third as numerous as the combined proteina 

 and Jiavescens forms. This means that they are far from 

 rare, and helps us to understand the probable secondary 

 mimicry of fulvescens by the under side of the female 

 Acrxa uvui, Grose-Smith. A single specimen of the 

 female of this small Acrma was captured in Mamba, Kili- 

 manjaro, on September 25, 1905. The under side of the 

 specimen differs entirely from that of the extremely 

 abundant male and from other females of its group, in 

 the overspreading fulvous tint which tends to obliterate 

 the markings, producing at the same time a considerable 

 superficial resemblance to the fulvescens form of A.j'ohn- 

 stoni. 



The fulvescens form, in addition to its mimicry of the 

 dorippus, Klug, form of Danaida chrysijjpris, L., resembles 

 the dai7'a form of Aciwa encedon, L. Both dorippus and 

 daira, Godm, and Salv., are the dominant forms of their 

 respective species. The local form of Acnva douhledayi, 

 Guer., of which a male was taken on Kilimanjaro, January 

 26-31, 1906, also much resembles daira and fulvescens, 

 and w^ould probably be indistinguishable from these when 

 upon the wing. E. B. P.] 



[Address and date lost. 



The two different forms of this [Acr^a j'ohnstoni] re- 

 semble other protected species, the commoner forms [po^o- 

 teina onA flaveseens^ being very like A. albimaculata which 



