ACJRAEA. By Dr. C. Aurivillius. 
267 
surface, triangular black spots at the extremities of the veins. Madagascar. In ab. rakeli Bdv. the light border- ralceli. 
ing of the veins is entirely absent in the distal part of the hindwing beneath and also the proximal bordering 
of the marginal spots is often indistinct; hence the marginal band becomes almost unicolorous. — $-ab. fu- fumida. 
mida Mab. has a grey ground-colour, on both wings relieved with whitish at the discal dots; the marginal band 
on the underside of the hindwing apparently always agrees with that of rakeli. Madagascar. 
A. rahira Bdv. (55 g). Both wings above light grey-yellow ($) or light grey (^); the veins in the distal rahira. 
part edged with black and at the distal margin Avidened into long triangular or rounded spots; basal and discal 
dots free and distinct; discal dots 1 b to 5 on the hindwing placed in an almost straight line and discal dots 6 
and 7 forming nearly a right angle with them. The under surface is similar to the upper, only somewhat lighter 
and with reddish streaks in 1 b, 1 c and the cell between the basal and discal dots; distally to the discal dots 
runs in la to 5 a whitish transverse band about 2 mm. in breadth, which is basally bounded by a dark line; this line 
terminates at vein 5 or 6 and is more or less indicated on the upper surface also; it evidently corresponds to 
the proximal boundary of the marginal band; the latter scarcely differs from the ground-colour or has some red¬ 
dish streaks on the interneural folds; at the distal margin the ground-colour is even lighter yelloAV, without, 
however, forming distinct marginal spots, the proximal boundary of the spots being entirely absent or only 
very indistinct. — Larva blackish with the thoracic legs yellow, a yelloAV lateral line and a white dorsal line; 
the spines are short, yellow, placed in yellow spots; head also yellow; lives on Erigeron. Pupa whitish with 
black markings. This very distinct species is fond of damp and marshy places and occurs in the whole of South 
Africa to Angola and Rhodesia. 
Second S u b g r o u p. 
The species of this subgroup are nearly allied and, as is shown in the synopsis of the subgroups (p. 260), especially 
characterized by haying the discal spot in cellule 1 b of the forewing placed almost straight behind the spot in cellule 2. 
In addition all the species agree in having discal spots (1 c) 3 and 5 of the hindwing placed nearer to the distal margin than 
the rest. The basal and discal dots of both wings are Avell developed. The anal end of the abdomen is in the unicolorous 
yellow to whitish, in the $$ black with rounded light spots. The species may be divided into two sections. 
First Section. 
Forewing w i t h submarginal dots at least in cellules 1 b a n d 2. 
Synopsis of the Species. 
A. Forewing without black streaks on the interneural folds in cellules 3 to 6, at the base usually blackish 
as far as vein 2. ! ■ 
a) The discal dot in cellule 4 of the fore wing is placed near the lower angle of the cell or the upperside 
of the hindwing has the marginal band very narrow or not sharply defined. A. natalica. 
b) The discal dot in cellule 4 of the forewing is placed at a distance (about 2 mm.) from the lower angle 
of the cell. Marginal band of the hindwing above always sharply defined, about 2 mm. in breadth. 
*. Wings above with reddish or whitish ground-colour. A. caecilia. 
**. Wings above with uniform sand-yellowish ground-colour. A. marnois. 
B. Fore wing with distinct black longitudinal streaks on the interneural folds in cellules 3 to 5 or 6 halfway 
between the distal margin and the discal dots. 
a) The light marginal spots on the underside of the hind wing large and rounded, proximally bounded by 
; iff] thick black curves. A. oncaea. 
b) The light marginal spots on the underside of the hindwing very narrow, streak-like and proximally 
bounded by very shallow, nearly straight curves or without proximal black boundary but here confluent 
with the ground-colour. A. atergatis. 
A. natalica Bdv. (55 f) varies greatly in size, but is on an average larger than the folloAving species, ha- natalica. 
ving an expanse of 46 to 80 mm. The ground-colour of the wings above is reddish to orange-yellow or brown- 
yellow and occasionally in the $$ on the hindwing much darkened, dark red-brown; both wings at the base 
blackish to about vein 2; the forewing with apical spot 4 to 5 mm. in breadth and black fringes, some¬ 
times also with the veins narrowly black; a basal dot in the cell and in 1 b at the outer edge of the black ba¬ 
sal spot; discal dots 4 to 6, 9 and 10 united into a transverse streak placed almost vertically to the costal 
margin; submarginal dots in lb to 3; hindwing with unspotted or indistinctly spotted black marginal band 4 
