318 Explanation of Plates. 
Amauris albimaculata (Fig. 2), viz. the white-spotted 
proteina forms (Plate XXII, Figs. la, 1b), and towards 
the female of fallax represented in the next figure. 
The hind-wing of flavescens (Fig. 1b) 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. 
Fia.2. Amauris albimaculata, Butl., 9. 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. Acrexa 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 flavescens (Fig. 1b) or proteina 
(Plate XXII, Figs. la, 1b) forms. December 15-31, 1905 : 
native collector. 
3. Planema quadricolor, Rogenh., ¢, the model of the 
semifulvescens, Oberth., form of Acrxa johnstoni shown 
in Fig. 8a. 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 
distinguished 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: Rey. K, St. Aubyn Rogers, 
3a. Acrexa johnstoni, form semifulvescens, Oberth., ¢. 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 suffusion with ground colour, producing a 
much closer approximation to the hind-wing pattern of 
