Fapilio dardanvs {mcwpc) and Acrma johnstoni. 293 



johnstoni, undoubtedly mimetic in this respect, wo meet 

 with a still further exao-rrcration of the same character, the 

 outer corner of the square being pulled out so as to form 

 the most distinctive feature of the wing (see Plate XXI, 

 Figs. 1^, 3«, and 4a, Plate XXII, Figs, let and 2a}. That 

 diajjosematic resemblance is apt to arise between the Papi- 

 lionid/v and the most distasteful groups in the same region 

 has been shown by Dr. F. A. Dixey (Trans. Ent. Soc. 

 Lond. 1806, p. 75 ; also 1894, p. 298) as regards S. America, 

 and recently in a very striking manner by Mr. S. A. Neave 

 (Trans. Ent. Soc. Lond. 1006, pp. 216-218) as regards 

 certain other African species. 



(4) Flaucmoides. Until Mr. C. A. Wiggins presented 

 his splendid series of captures made in 1003 near the N.E. 

 and N.W. shores of Lake Victoria Nyanza, there only 

 existed in the Hope Department a single specimen labelled 

 "Angola; Rogers, 1873." This specimen was, as far as I 

 am aware, up to 1903, the uni(|ue representative of 

 planemoides in European collections. There are at the 

 present moment no less than ten examples of the form, 

 or of intermediates between it and other forms, at 

 Oxford,* so that it is now possible to compare planemoides 

 with the other mimetic females of dardanns and to 

 attempt to assign its place and suggest its past history. 



It is convenient first to describe the intermediate 

 specimens. 



(a) ^form intermediate hctwcen cenea and planemoides. 



The specimen here described is represented on Plate 

 XX, Fig. 1. The discal patch of the hind-wing is not white 

 as in planemoides but nearer to the butf of ecnea, although 

 with a faintly reddish-brown tinge which may perhaps 

 indicate some influence of trophonius. The submarginal 

 light spots are more developed than is usual in p)lanemoides, 

 although the example represented in Fig. 4 does not 

 differ widely in this respect. While the hind-wings more 

 nearly resemble the ^ f. cenea, the fore-wings are on the 

 whole much nearer to p)lanevioides, as may be inferred by 



* Some of these do not belong to the Hope Collection, but are the 

 property of Mr. A. H. Harrison. Tliey are however available for 

 study and comparison, and two of them are represented on Phite 

 XX, Figs. 1, 4. No less than five out of tlie ten examples are 

 figured on the plates accompanying the present memoir, and a sixth 

 by Mr. S. A. Neave on Plate X, Fig. 8. 



