318 Explanation of Plates. 



Amauris alhimaculata (Fig. 2), viz. the white-spotted 

 proteina forms (Plate XXII, Figs, la, 16), and towards 

 the female of fallax represented in the next figure. 



The hind- wing of flavescens (Fig. \h) is seen to present 

 a far more perfect resemblance to the Danaine models 

 (Fig. 1, 2) than that of fallax (Figs, la, 2a). The 

 superiority is brought • about by a characteristically 

 squarish buff discal patch which is sharply outlined and 

 exhibits hardly any invasion of marginal rays. December 

 15-31, 1905 : native collector. 

 Fig. 2. Amauris albimaculata, Butl., $ . In this specimen all the 

 spots of both wings are pure white, the only buff marking 

 being the discal patch of the hind-wing. December 

 15-31, 1905 : native collector. 



2a. Acrgea johnstoni, form fallax, Rogenh., 9 • The white- 

 spotted female of this form is beautifully mimetic of the 

 Danaine shown in Fig. 2. The discal patch of the hind- 

 wing is however very similar to that of the buff-spotted 

 male represented in Fig. la and like it less markedly 

 mimetic than either the Jlavescens (Fig. lb) or 'proteina 

 (Plate XXII, Figs, la, 16) forms. December 15-31, 1905 : 

 native collector. 



3. Planema quadricolor, Eogenh., ^, the model of the 

 setnifulvescens, Oberth., form of Acrxa johnstoni shown 

 in Fig. 3a. The basal area of the hind-wing and the 

 inner half of the fore-wing, — viz., the whole of its area on 

 the basal side of the black-margined curved fulvous 

 subapical band, — are of a deep rich brown hardly to be 

 distinguislied from black by photographic methods and 

 therefore barely recognizable in the figure. N.E. slopes of 

 Kilimanjaro, about 5000 feet ; State of Mamba : September 

 25, 1905 : Rev. K. St. Aubyn Rogers. 



3a. Acr sea johnstoni, ioTva se')nifidvescens,Ohevth., (^ . The four 

 characteristic spots, pale yellow in tint, lie on the borders 

 of the fulvous inner area of the fore-wing; thus suggest- 

 ing a likeness to the model (Fig. 3), where the inner 

 area is also separated by a subapical bar of lighter tint 

 from the black apical region. The pale yellowish discal 

 patch of the hind-wing of course forms an area much 

 broader than that of the model. In another specimen of 

 this form however (Kilimanjaro, December 15-31, 1905, 

 native collector) the basal half of this patch is almost 

 obliterated by suft'usion with ground colour, producing a 

 much closer approximation to the hind-wing pattern of 



