470 Dr. A. G. Butler 
A Revision 
mediate phase (7. omphaloides=complexivus), which has a 
dry-season under surface, the discal black belt is either barely 
indicated or wholly absent. TZ. corda is merely a starved 
variety of the male of this phase. Z’. theogone=procne 1s 
the extreme dry-season form, in which the black discal belt 
ot the male has wholly disappeared and the internal stripe 
on the primaries nearly so, whilst the female is much less 
heavily marked than in the wet-season, and is sometimes 
yellow, flushed with orange above; the under surface of the 
dry-season form is very rosy and irrorated with clay-brown. 
63. Teracolus exole. 
Anthocharis exole 3, Reiche, Ferr. & Gal. Voy. Abyss. pl. xxxi. fig. 4 
eae eurygone (?), Lucas, Rev. et Mag. de Zool. 1852, p. 341. 
Anthopsyche acte, Felder, Reise der Nov., Lép. p. 187 (1865). 
Anthopsyche rovane, Felder, /. c. 
Teracolus hybridus, Butler, P. Z. 8. 1876, p. 152. 
Ranges down the east coast from the Sabaki valley to the 
Cape. 
It is perhaps only an emphasized form of 7. omphale, from 
which it chiefly differs in the greater development of black on 
the upper surface, even the dry-season phase having a 
distinctly wet-season pattern above. ‘The female figured by 
Reiche as that sex of J. exole is T. antevippe. TT. acte of 
Felder is the true female (wet-season form), 7’. rowane is a 
female of the intermediate phase, and 7. hybridus, which 
Mr. Marshall places as an intermediate phase of 7’. evippe, is 
the dry-season form. A. ewrygone answers best to the wet- 
season form of 7. evole, but the locality ‘ Coast of Guinea” 
is rather against this identification. 
64. Teracolus pyrrhopterus. 
Teracolus pyrrhopterus, Butler, P.Z.S. 1894, p. 575, pl. xxxvi. figs. 8, 9. 
Apparently confined to the vicinity of Mount Kenya: two 
specimens (the types) not being ticketed with exact locality, 
I supposed them to be from the Sabaki valley ; the same was 
the case with three examples of the wet-season form, but 
others are labelled Thegu and Thagana. Guaso Thegu is a 
gorge to the west of Mount Kenya, and Thagana appears not 
to be far off. 
The wet-season form of this butterfly resembles small and 
lightly marked examples of 7. omphale on the upper surface, 
but below it inclines to pink rather than cream-colour in tint, 
and this is especially the case with the discal stripe on the 
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