398 Revision of the Genus Teracolus, Swazns. 
this species and, in a less degree (sometimes), to T. emperator, 
and the single costal spot, which Godart does not specially 
mention, may easily have been reckoned by him as one of 
these marginal spots. Lastly, the white colouring of the 
under surface, upon which stress has been laid, is really of 
very little importance, for worn examples, or such as had 
been long on the wing, would show little if any yellow 
tinting. There is no accounting for the presence of many of 
the rare species which found their way into the collections of 
the older authors, often not to reappear for a hundred years 
or longer. As regards the argument as to Boisduval having 
seen M. Godart’s type, it is evident, from what Mr, Trimen 
says, that the late Doctor confounded all the purple-tipped 
Teracoli together *. . jobina is the dry-season form of the 
species, and the description was based upon four examples in 
the collection of Mr. Druce from Natal. These subsequently 
came into the possession of Messrs. Godman and Salvin, 
whose series of eleven specimens (inclusive of the above) is 
now in the Museum collection. An intermediate season form 
long represented 7’. jobina in the Museum, but three specimens 
in the Hewitson collection are typical. 
24. Teracolus bacchus. 
Teracolus bacchus, Butler, P. Z. S. 1888, p. 73; Grose Smith and 
Kirby, Rhop. Exot. i., Cadi. pl. i. figs. 1-4 (1889). 
Callosune mrogoana, Vieillot, Bull. Soc, Ent. France, 1891, pp. ci and 
CXV. 
Ranges from Lado, north of the Albert Nyanza, south- 
wards to Mamboia and the Nguru hills, and eastwards to 
Kilima-njaro. 
The wet-season form is characterized as distinct from 
T. imperator by its inferior size, the heavy black veining on 
both surfaces, the well-defined grey internervular spots on 
the apical border of the primaries in the male, and the rudi- 
mentary character of the transverse band on the under surface 
of the secondaries in that sex ; it possesses also two forms of 
female, as is the case with 7’. done. The dry-season male is 
somewhat larger, with the black veins much less defined 
above and almost or altogether wanting below, the black 
marginal spots also wanting on the upper surface of the 
* This has been further proved by Mons. Dognin, who has kindly 
examined the original examples for me, but has been unable to decide 
which is the type of M. Godart’s description, or even if it still exists in 
the series. 
