by J. A. O'Neil. 155 
the hind-margin. Examples with orange-red fore-wing have the 
hind-wing entirely red, turning to light olive-buff or, rarely, pale 
mauve near the outer-margin. Both wings have a narrow, or very 
narrow, olive-brown or reddish-brown hind-marginal border. 
In typical examples the fore-wing has a sub-basal, median and post- 
median wavy transverse band; but in many specimens, one, two or 
all of these bands are very faint, and the two inner ones are sometimes 
obsolete. Very rarely all three are wanting. 
Wing expanse. ¢ 125-166 mm.; @ 150-175 mm. Common at 
Salisbury. 
L. natalensis is very closely allied to L. macrothyris, Roths, & Jord., 
and a good many people have been very sceptical about the specific 
difference of the two. Having bred a large number of both moths 
from the egg, I am in a position to state that there is not the slightest 
doubt that the two are quite distinct, and can demonstrate this by 
setting down in parallel columns the points of difference that may be 
noted all through from the ovum to the imago. The larvee of both 
species feed on Lrachystegia randit. 
L. natalensis. 
Egg. Light green with a few 
reddish spots. 
Larva. 
lst instar. 
black. 
2nd instar. 
Head and_ body 
Head black. Tho- 
rax and abdomen  grass-green. 
Thoracic segments mottled with 
dark green spots ; abdominal seg- 
ments with no dorsal, and only a 
few lateral dark green spots. 
The dark green 
spots much more numerous than 
in previous instar, covering both 
dorsal and lateral surfaces. Stig- 
mata very light red-brown. On 
second abdominal segment there 
3rd instar. 
is a silvery-white, oblique carina, 
interrupted near its lower ex- 
tremity. Abdominal feet with 
only a few sete inferiorly. 
L. macrothyris. 
Light ochreous-yellow, speckled 
with brick-red spots. 
Head and body dark brick-red. 
Thorax and 
abdomen emerald green, mottled 
all over with dark green round 
spots. 
Head light green. 
Dark green spots cover only 
the dorsal and part of the lateral 
surface, stopping short at some 
distance from the stigmata, which 
are dark crimson. No silvery- 
white carina on second abdominal 
segment, but, instead, a silvery- 
white post-cephalic plate or ridge. 
Abdominal feet closely set with 
sete inferiorly. 
