Geographical Distribution of Acraea lycoa, A. johnston. 9 
echeria and A. albimaculata, together with a synaposematic 
approach to the confusa form of A. johnstoni, especially 
developed at Kilimanjaro and on the Kikuyu Escarpment. 
Throughout its range and variations lycoa presents a pale 
discal area in the hindwing, which, though varying from 
white to yellow and showing a very ill-defined outline 
in males from the extreme west, nevertheless has, except 
in some examples of the fallax and Mount Kenia forms, a 
well-rounded distal outline. In /ycoa the basal spots of 
the hindwing underside are almost always smaller and less 
confluent than in johnstoni, though this feature is some- 
what variable. A careful examination of the neuration 
in lycoa and johnstoni, shows the following differences 
(see Plate II, figs. 4 and 5). In the forewing of the 
former, the lower discocellular nervule is nearly always 
rather shorter and lies in a more nearly transverse direc- 
tion than in johnstoni. This feature is also subject to 
slight variation. The hindwing cell presents a difference 
in the two species, and owing to the pale colour of the 
scales in this area the difference can be more readily seen. 
In lycow the cell has a generally broader and shorter 
appearance than in johnstont. This effect is produced to 
a great extent by the fact that the middle discocellular 
nervule is outwardly more deeply concave in the latter 
than in the former. This feature is fairly constant, and 
is quite evident in the examples from Kenia referred to 
above. The most conclusive test of specific distinction is, 
however, to be found in the structure of the male genital 
armature. I have made a large number of preparations 
from examples occurring throughout the range of the 
two species and from the different varieties, and have 
also examined many others not actually dissected out and 
mounted. The accompanying plate gives outlines of the 
neuration, and also drawings of the male genitalia of lycoa, 
Johnstoni, and toruna. Fig. 1 shows the appearance of 
the first, and fig. 2 that of the second. The claspers are 
for the most part shorter and stouter in lycoa than in 
johnstont. The penis is comparatively short, frequently 
showing a kind of bilobed structure, and is not a con- 
tinuous tube, but is widely grooved towards its extremity. 
The uncus is comparatively very short, obtusely pointed, 
and bears a small process on each side. In johnstoni the 
penis is long and slender, it does not show a bilobed 
structure, and though it is grooved like that of lycoa, the 
