of the Genus Teracolus, Swans. 471 
secondaries, whilst the subapical patch on the primaries 1s 
bright brick-red, as in the brightest examples of 1’. theogone 
(the dry-season form of 1’. omphale). The intermediate 
phase has the black banding of the upper surface still weaker, 
and below the subapical patch on the primaries and the discal 
stripe across the secondaries are sharply detined and very 
vivid upon a creamy ground-tint; the fringes rosy: the 
(typical) dry-season form retains the black internal stripe on 
the primaries, which is absent in males of 1. theogone, and 
still shows a trace of the discal stripe on the secondaries; the 
apex of primaries and the secondaries below are bright rosy, 
the former with diffused bright brick-red subapical patch, the 
latter with the discal stripe varying from brick-red to gravel- 
brown. 
I cannot agree at all to Mr. Marshall’s arbitrary decision 
that this localized form is inseparable from T. omphale, no 
examples of which that I have ever seen in the slightest 
degree resemble its dry-season phase. That 7. pyrrhopterus 
and 7’. omphale had a common origin will not be disputed, 
but that they are now distinct I firmly believe. 
65. Teracolus evippe. 
Papilio evippe, Linnzeus, Mus. Lud. Ulr. p. 239 (1764). 
Papilio arethusa, Drury, Ul. Exot. Ent. ii. pl. xix. figs. 5, 6 (1773). 
Papilio eborea, Cramer, Pap. Exot. iv. pl. ccclxii. figs. C, D (1782). 
Papilio hanna, Herbst, Natursyst. Schmett. pl. evii. figs. 5, 6 (1792). 
Pieris amytis, Godart, Enc. Méth. ix. p. 125 (1819). 
Anthocharis cebrene, Boisduval, Sp. Gén. Lép. i, p. 583 (1836). 
Teracolus pseudocale, Butler, P. Z. 5. 1876, p. 154, pl. vi. fig. 9. 
On the west of Africa this species ranges from Sierra Leone 
to Old Calabar and the Cameroon Mountains; it reappears 
at the Cape, and extends up the east side of Africa as far as 
Natal. We have one almost typical example from the West 
Coast as far south as Loanda ; therefore, although the species 
is represented in S.W. Africa by T. ocale, the latter can 
hardly be regarded as more than a climatic race. On the 
other hand, the northern 7’. epigone appears to be geographi- 
cally separated from 1’. evippe, and, though nearly allied, 
must be regarded as a distinct species. 1’. pseudocale is a 
starved southern variety of the wet-season phase. 
The females of the typical wet-season 7’. evippe vary con- 
siderably in ground-tint and in the character of the apical 
patch; the rarest form of the female is that which most 
nearly approaches the south-western race, with white ground- 
tint and the black apical patch of the primaries enclosing a 
clear orange arched band ; a second less rare form has this band 
