504 Dr. A. G. Butler—A Revision 
We have a very fine series of wet-, intermediate, and dry- 
season examples of this species. 1. aurigineus represents the 
wet and 7’. venustus the dry phase. 
Race? Teracolus Ansorget. 
Teracolus Ansorgei, Marshall, P. Z. S. 1897, p. 13. 
Somaliland. 
Chiefly differs from 7. aurigineus in the absence of the 
ashy whitish base to the primaries of the male; but, if 
examples from Gallaland are referable to the same species, 
this character must be variable. 
91. Teracolus Doubledayt. 
Idmais Doubledayi, Hopfter, Peters’s Reise n. Mossamb., Zool. vy. p. 363 
(1862). 
Idmais Hewitsoni, Kirby, Cat. Diurn. Lep. p. 498 (1871). 
Idmais chrysonome, Doubleday and Hewitson (not Klug), Gen. Diurn. 
Lep. pl. vii. fig. 5 (1847). 
Congo, Angola. 
The dry-season form is small and suffused with vinous 
over the darker markings of the under surface, the bands 
across the secondaries being vinous brown instead of golden 
orange or cadmium-yellow. 
92. Teracolus rhodesinus. 
Teracolus rhodesinus, Butler, P. Z. 8. 1893, p. 663. 
Lake Mweru, Central Africa 
I have only seen the type of this species (a wet-season 
male), but it is so markedly distinct from the allied 7’. mutans 
that I cannot for a moment entertain the notion of its being a 
form of that species. It differs not only in the slender discal 
band across the upper surface (which is partly obliterated), 
but in the creamy ochreous tint of the upper surface extending 
inwards almost to the base of the secondaries, in the paler 
sulphur tint of the apex of primaries and the secondaries on 
the under surface, as also in the strongly defined and more 
parallel inner angular band across the latter wings. In some 
of these characters it more nearly approaches 7’. awrigineus. 
Mr. Marshall asserts that this butterfly combines the 
characters of 7. Hanningtont and mutans! I fail to see 
where 7’. Hanningtont comes in. 
