226 
SOUTH-AFKICAX BUTTEEFLIES. 
of thorax, a dorsal n-iedian stripe from meta-tliorax to fourth abdominal 
segment, an irregular streak at each side of back of same abdominal 
segments, some streaks roughly indicating main neuration of wings, 
and some longitudinal streaking on under side of head and leg-cases, 
all darker and in parts approaching to blackish.-^ 
Aberration — In fore-wing, the disco-cellular spots and all the 
spots of discal series (except the small third one) enlarged and con- 
fluent into a broad band, the outer half of cell being completely filled 
with sulphur-yellow. In both wings the spots of the submarginal 
series are almost entirely effaced, and those of the hind-marginal edge 
exceedingly small ; and in hind- wing the red of the anal-angular 
ocellus is replaced by black. On the under side the same peculiarities 
are reproduced, but the submarginal and hind-marginal spots are of 
nearer the normal size, though very obscured in tint. — Hab. Pletten- 
berg Bay, Cape Colony. (Sent to me in 1880 by the late W. H. 
N"ewdigate.) 
A $ presenting some approach towards the sport " just described 
was bred near Cape Town from a fennel-eating larva in January 1869, 
^ Soon after receiving Mrs. Barber's account {Travis. Ent. Soc. Lond., 1874) of the 
remarkable adaptation of colour in the pupa of P. Lyceus {Nireus, auct., part) to its imme- 
diate surroundings, I endeavoured to ascertain if the chrysalis of P. Demoleus (w^hich in 
nature I knew to be variable) was similarly susceptible. I found that this was the case, 
although to a less extent ; but unfortunately I kept no notes of the experiment. Lately (in 
February 1888) I have repeated my endeavour, causing the larvjE to pupate in boxes respec- 
tively lined with paper of different colours, but covered with glass only, and fully exposed to 
daylight. The results were as follow, viz. : — 
1. Pupa formed on deep-green paper: above pale sandy-ochreous witli a reddish tinge; 
beneath paler, but with the wing-covers tinged with greenish -grey. All the customary 
darker streaks and markings almost obsolete. 
2. Pupa formed on hroion paper : not unlike the above, but all the back with a more red- 
dish tinge ; in one case with the front and sides of thoracic peak, the lateral thoracic angles, 
wing-covers, and the sides and under surface of abdomen, all varied with bright pale- 
green. {N.B. — Some of the food-plant was accidentally left in the box with this latter 
pupa.] 
3. Pupa formed on white paper : paler than others, especially on back. 
4. Pupa formed on hrigld chrome-yellow paper : above creamy yellow-ochreoiis ; beneath 
dull greenish-grey, except abdomen, which was pale flesh-colour. 
5. Pupa formed on vermilion-red paper : above bright greenish-yellow, with ordinary 
darker markings pale creamy-ferruginous ; beneath wholly very pale greyish-green. Another 
example was very different in tint, not unlike pupa on bright chrome-yellow paper, but of a 
deeper and more rufous yellow above. 
6. Pupa formed on rich deep-blue paper : above pale sandy-ochreous, beneath of almost 
the same colour ; usual markings dull fuscous-grey. 
A pupa formed in complete darkness nearly resembled those formed on the deep-green 
paper, but was paler and more cream-coloured above. 
A larva left to choose its place of suspension in a large new breeding-cage selected a 
wooden bar across the arched top, and the resulting pupa much resembled the pale ochrey- 
yellow tint of the freshly-planed deal to which it was attached. 
In these cases it will be noticed that although there was considerable variation in the 
colouring of these puptE (most noticeable in those on the red and yellow papers), the tints for 
the most part by no means reproduced or even approached those of the surfaces immediately 
about the insects. The adaptability of the pupa to the hues of its ordinary natural surround- 
ings is, however, very observable, though it appears to be but slightly and irregularly suscep- 
tible to colours beyond those narrow limits. 
