248 
SOUTH-AFRICiVN BUTTERFLIES. 
? Third Form {Trophonms, Westw.).-^ Pattern of Second. Form^ 
hut large patch in loth wings voider, and pale hrich-red instead of white. 
Fore-wing : disco-cellular oblique white streak usually longer and 
wider ; small subapical white spot rarely well expressed, sometimes 
very minute, often altogether wanting ; subapical oblique white bar 
as in Second Form, but sometimes with a creamy-reddish tinge ; inner- 
marginal brick-red patch usually extending close to base and over 
median nervure into discoidal cell. Hind-iving : patch usually ex- 
tending to base itself (but rarely with a very narrow blackish suffusion 
there), and externally nearer to hind-margin, — its outer edge not so 
conspicuously marked with dark neuration and inter-nervular rays ; a 
few of the submarginal spots sometimes tinged with creamy-reddish. 
Under side. — Borders of wings as in Second Form ; in other respects the 
pattern and coloration of upper side is reproduced, %vith the Irich-red 
rather paler and duller ; dark neuration and inter-iiervidar streaks not 
strongly marked. 
Coloration and markings of head and body as in ordinary 
In addition to the three prominent and very distinct forms above 
described, the $ P. Cenca presents numerous intermediate and other 
variations, of which the following are the principal instances that have 
come under my notice, viz. : — 
A. Between Forms i (Cenea) and 2 (analogue of Hippocoon Fab.). 
a. P. Merope^ Butler ( ? , P. Cenea, var.), in Trans. Ent. Soc, loc. cit., 
P- ^75. .... 
This individual is very close to the typical Cenea, but in the 
shape and position of the very restricted patch in the hind- 
wiiigs resembles the individual (c) following hereunder. — Hab. 
Grahamstown, Cape Colony. 
b. P. Cenea, Trim. ( $ , variation), Trans. Ent. Soc. Lond., 1874, p. 
150, note. 
All the upper-side markings in this specimen are white, and 
though answering to those of the Hippo coon-like form, are so 
reduced and attenuated as (with the single exception of the 
very much narrowed and dentated subapical bar of the fore- 
wings) more to resemble those of the white-spotted variety of 
Cenea. — Hah. Knysna, Cape Colony. 
c. P. Merope, Trim. ( $ , variation), in Trans. Linn. Soc., loc. cit.^ f. 2. 
All the markings in this individual are dull white. The fore- 
wings have the subapical bar of the Hi2:)pocoon-like form, and 
an inner-marginal patch strictly intermediate in size and shape 
between those of the latter form and of the Cenea form respec- 
tively. The patch of the hind-wings is much narrowed by a 
fuscous basal suffusion. — Hab. Tsomo River, Kaffraria (/. H. 
Bowker). 
d. P. Cenea, Trim. ( 9 , variation) [ = P. Merope, peculiar Hippocoon 
form, J. P. Mansel Weale], Trans. Ent. Soc. Land., 1874, p. i44- 
In the fore-wings both the subapical white bar and the inner- 
marginal white patch are considerably smaller and narrower 
than in the ordinary Southern Hippocoon, the latter marking 
Mimics Danais Chriisippus, (Linn.). 
