ACRAEA. By Dr. C. Actrivillius. 
277 
band. Madagascar, ab. marmorata Smith only differs in having the ground-colour of both wings light yellow marmorata. 
to sulphur-yellow. Madagascar. 
A. hypoleuca Trim. Expanse about 60 mm. Wings above orange-red; forewing above with dark hypoleuca. 
marginal band, which encloses 8 large light marginal spots; discal dots in 1 b to 6, all rounded, that in 
1 b near the distal margin, those in 2 to 4 in a line, those in 4 to 6 also in a line, placed almost vertically 
to the preceding; beneath as above, but with whitish subapical band. Hindwing above with white-spotted 
marginal band 2 mm. in breadth and distinct discal spots, beneath marked as above but with whitish ground¬ 
colour and larger white marginal spots. Seems to be nearly allied to A. chilo and zetes. The only known 
specimen probably came from German South-West Africa. 
Second Section. 
F o r e w i n g with distinct submarginal dots at least in lb and 2. The 
discal dots of the hindwing are arranged as in the species of the second 
subgroup; the dots in 2 and 4 are con sequently placed nearer to the base 
than those in 3 and 5. 
Synopsis of the Species. 
I. The veins of the forewing above becoming gradually more broadly edged with black towards the distal 
margin. The forewing usually with submarginal dots only in 1 b and 2. 
a) The veins of the hindwing also thickened with black towards the marginal band. The light marginal 
spots on the hindwing beneath are narrow and proximally bounded by nearly straight black streaks, 
which are occasionally indistinct. A. petraea. 
b) The veins of the hindwing not black towards the marginal band. The light marginal spots on the hind¬ 
wing beneath proximally bounded by black lunules. A. buettneri. 
II. The veins of the forewing not edged with black. The foreving often with 4 to 6 submarginal dots. 
The apex of the forewing beneath with 2 to 4 light marginal spots. 
a) Marginal band of the hindwing above narrower, about 2 mm. in breadth, proximally curved in each 
cellule and usually with distinct light marginal spots. 
1. The black dots on both wings large and strongly developed. A. violarum. 
2. The black dots on the wings smaller and often partially absent. A. asema. 
b) Marginal band of the hindwing above 4 to 5 mm. in breadth, unspotted and often not sharply 
defined proximally. A. omrora. 
A. petraea Bdv. (54 f) recalls A. atolmis, from which it can be at once distinguished by the submarginal petraea. 
dots of the forewing. Wings above bright red to orange-yellow with the black markings strongly developed; 
discal dots 3 to 6 of the forewing are placed in a line vertically to the costal margin and are often en¬ 
larged and joined to the median spot; the hindwing beneath light reddish yellow with red spots between 
the dots and red spots or streaks before the marginal band; the discal dot in 3 seems to be always absent. 
The $$ have a broad white or whitish subapical band on the forewing and the ground-colour is often darker, 
reddish grey to black-grey, particularly on the forewing. The dry-season form, petrina Sujf., has reddish petrina. 
marginal spots at the apex of the fore wing. — Larva goldy brown with black longitudinal and transverse 
lines and black spines; head black with white angled spot; lives on Oncoba kraussiana. Pupa light brown 
to red-brown with black markings. — ab. taboraria Stiff, only differs in having the black dusting at the base taborana. 
of the forewing extended as far as the black dots in the cell and the discal dots of the forewing smaller. — 
rohlfsi Suff. (60 d). After an exact comparison of the figures and description of this form with petraea I can rohlfsi. 
only regard it as an extreme form of the latter, from which it differs in having the marginal band of the liind- 
wing narrow and on the underside indistinct. In all other characters it agrees with petraea. The difference 
between rohlfsi and petraea is hence almost the same as between atolmis and acontias or between atergatis and 
its dry-season form. I have specimens of petraea before me from German East Africa which form a distinct 
transition to rohlfsi, having the marginal band of the hindwing scarcely more than 0.5 mm. in breadth; this 
is, however, distinctly defined beneath by black streaks. Ukerewe Island in Victoria Nyanza. 
A. buettneri Rog. (54 f). Wings above orange-yellow with large angular black dots, which are arranged buettneri. 
as in petraea ; distal margin and apex of the forewing narrowly black and the veins before the distal margin 
black-edged; wings beneath more reddish yellow and the hindwing often with red spots at the base; marginal 
band narrow, 1 to 1.5 mm. in breadth, above unspotted, beneath with large, transversely placed white mar¬ 
ginal spots; the discal dot in 3 large and nearer to the distal margin than those in 2 and 4. Damaraland, 
Rhodesia and southern Congo. 
A. violarum Bdv. (55 a). Wings above with dull brick-red to grey-red to grey ($) ground-colour and violarum. 
large black dots; forewing with fine black marginal line, which is widened at the apex into a spot 2 mm. in 
