470 Dr. A. G. Butler A Revision 



mediate phase (T. omphaloides=.complexivus), which has a 

 dry-season under surface, the discal black belt is either barely 

 indicated or wholly absent. T. corda is merely a starved 

 variety of the male of this phase. T. theogone=procne is 

 the extreme dry-season form, in which the black discal belt 

 of 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 $ , Reiche, Ferr. & Gal. Voy. Abyss, pi. xxxi. fig. 4 



(1849). 



Anthocharis eurygone (?), Lucas, Rev. et Mag. de Zool. 1852, p. 341. 

 Anthopsyche acte, Felder, Reise der Nov., Lep. p. 187 (1865). 

 Anthopsyche roxane, Felder, /. c. 

 Teracolus hybridus, Butler, P. Z. S. 1876, p. 152. 



Kanges down the east coast from the Sabaki valley to the 

 Cape. 



It is perhaps only an emphasized form of T. 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 

 Eeiche as that sex of T. exole is T. antevippe. T. acte of 

 Felder is the true female (wet-season form), T. roxane is a 

 female of the intermediate phase, and T. hybridus, which 

 Mr. Marshall places as an intermediate phase of T. evippe } is 

 the dry-season form. A. eurygone answers best to the wet- 

 season form of T. exole, but the locality " Coast of Guinea" 

 is rather against this identification. 



64. Teracolus pyrrhopterus. 

 Teracolus pyrrhopterus, Butler, P. Z. S. 1894, p. 575, pi. 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 T. 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 



