ACLEROS. By Dr. C. Aurivillius. 
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2. In the $ (<$ unknown) the hindwing beneath is almost monotonously greyish brown with a white 
central spot and whitish, dark-pupilled marginal spots between the veins in 1 b to 3. A. kasai. 
**. Hindwing beneath with a broad, dark, inwardly often somewhat bulging marginal band reaching 
to the base of veins 3 and 4 and being very sharply defined towards the whitish median band; at 
the centre of the margin between the veins 2 and 6 it is more or less brightened up by grey scales. 
A. mackeni. 
B. Forewing beneath at the posterior margin broadly white or whitish. 
a. Hindwing beneath in the marginal half with a broad, dark, inwardly often convex marginal band which 
is lighter in the centre of the margin. 
*. Forewing without subapical dots in 6 to 8. A. plotzi. 
A. instabilis. 
**. Forewing with white subapical dots in 6 to 8. A. olaus. 
[i. Hindwing beneath without a darker marginal band, nearly everywhere uniformly marked. 
*. Hindwing beneath white with dark striae and transverse lines. A. substrigatus. 
**. Hindwing beneath blackish-grey, densely and almost uniformly strewn with greyish-blue scale- 
spots. Last palpal joint short, coniform. A. placidu-s. 
A. sparsus H. Drc. (77 b). Hindwing above at the margin narrow white. $ unknown. Cameroon, sparsus. 
A. leucopygus Mob. (? = minusculus Rbl.) was described from Madagascar, but according to Ham. leucopyguo. 
Deuce it is said also to occur on the African Continent, and is probably the same species as minusculus Rbl. 
Rebel describes his species as follows: ,,Allied to the preceding species (mackeni), but much smaller and on 
the hindwing along the margin before and in the anal angle with white spots proceeding from the white fringes. 
Beneath the wings are lighter than in mackeni, particularly the bluish-white, brown-speckled hindwing entirely 
lacks the band-like darkening before the margin. Length of forewing 11 mm.“ 
A. kasai H. Drc. Wings above blackish-brown. Forewing with two white dots in the apex of the kasai. 
discal cell, white cliscal spots in 2 and 3 and white subapical dots in 6 to 8. Hindwing also above with a 
white central spot. Forewing beneath almost as above with a large, cleft, white discal spot in 1 b. Congo 
District: Ivassai. —- dualensis Strd. only differs in the light central spot of the hindwing above being absent dualens’is. 
and the forewing only showing one subapical dot (in 6). Cameroon: Duala. 
A. mackeni Trim. (77 a). Forewing in the A above without distinct discal spots, in the $ generally mackeni. 
with whitish discal spots in 1 b and 2. Hindwing above uni-coloured black with white fringes or behind the 
centre at the margin narrowly white. Natal to Angola and Kilimandjaro. -— nyassicola Strd. is said to differ nyassicola. 
by yellowish discal spots of the forewing, and on the hindwing beneath by the basal area being densely dusted 
with ochreous-brownish scales. Nyassa Land. — - aurifrons Strd. $. Forewing above with three discal spots aurifrons. 
(in 1 b to 3) which are connected with each other or only separated by the veins, and with three small subapical 
dots in 6 to 8. In the $ the forewing only shows 2 indistinct discal spots and no subapical dots. Nyassa 
Land. 
A. plotzi Mob. (77 a) is easily recognized by the sharply marked under surface. In the $ the forewing plotzi. 
shows a white dot in the discal cell and one discal spot each in 1 b and 2. Gold Coast to Congo. 
A. instabilis Mab. (77 b) is closely allied with plotzi, but somewhat larger and, as the figure shows, instabilis. 
with a much lighter under surface. East Africa. 
A. olaus Plotz (77 b) only differs from plotzi by the marks mentioned in the review. West Africa olaus. 
from Togo Land to Loango. 
A. substrigatus Holl. (77 a). Cameroon and Gabun. substriga¬ 
tus. 
A. biguttatus Mab. is unknown to me. Black above without spots; fringes of forewings whitish- biguttatus. 
grey, of hindwings white, wings beneath greyish-blue. Forewing at the anal margin with a large white triangular 
area. Hindwing strewn with white scales, and with two fine white longitudinal rays at the hind-margin. 
— $ similar to the but on the forewing above with two small white spots in 1 b and 2.“ Expanse of wings 
of the A 17 mm. Sierra Leone. 
A. placidus Plotz (77 a) differs, if I am not at fault, from all the other species in the short terminal placidus. 
joint of the palpus and ought perhaps to be regarded as the type of a separate genus. The hindwing is sometimes 
quite black, sometimes at the margin narrowly and irregularly white. In the 9 the forewing shows two dots 
in the discal cell and small white discal spots in 1 b and 2. Gold Coast to Cameroon. — displacidus Rbl. is said displacidus. 
to differ from placidus merely ,,in the white colouring of the fringes invading the surface of the hindwing“. 
There occur, however, intermediate stages between this form and the form with quite black hindwings. Central 
Africa, in the primeval forest. 
