Revision of the Genus Teracolus, Swacns. 495 
LVIII.—A Revision of the Species of Butterflies belonging to 
the Genus Teracolus, Swains. By ArtTHuR G. BUTLER, 
Plie)., FE .L5., HeZes mene: 
[Concluded from p. 475.] 
67. Teracolus Hildebrandti. 
Callosune Hildebrandti, Staudinger, Exot. Schmett. p. 45, pl. xxii. 
(1886). 
From Nyasaland northward to Uganda and eastward to 
Mombasa. : 
This species is certainly dimorphic in its wet and dry 
phases, having the apical patch on the primaries either dull 
ochreous or bright crimson; it is very closely related to the 
southern 7’, Anne, but is, generally speaking, a slightly larger 
insect with a little less black about it, the female of the wet- 
season form clearer and more cream-tinted on the under 
surface of the secondaries. At the same time its dimorphic 
character is its best one, the crimson-tipped forms (especially 
the males) of the two butterflies being remarkably similar in 
every respect. It is curious that just when Mr. Marshall was 
stating that this species had “only been received from the 
basin of the Sabaki River,” we were receiving a male of the 
dry-season form from Nyasa, completely proving the specific 
identity of this species with the crimson-tipped representative 
of J’, Anne, four examples of which from Nyasa stand in the 
Hewitson series, whilst the Godman and Salvin collection 
contained seven now transferred to the Museum series. An 
example of the dry-season form of this variety is recorded by 
Mr. Marshall in a footnote as T. Anne; yet he professes to 
distinguish the two species partly by the black inner edging 
to the apical patch—a very unreliable character, which varies 
considerably in 7. Anne itself. 
68. Teracolus Anne. 
Thestias Anne, Wallengren, Kongl. Svensk. Vetensk.-Akad, Handl. 
1857; Lep. Rhop. Cattr. p. 66. 
Anthocharis Danae, Hewitson (nec Fabr.), Gen. Diurn. Lep. pl. vil. 
fig. 3 (1847). 
ee: Teracolus cinerascens, Butler, Cist. Ent. i. p. 172 (1873). 
— — *‘Teracolus Wallengrent, Butler, P. Z.S. 1876, p. 157. 
Callosune Wallengrent, Westwood, in Oates’s Matabeleland, p. 341, 
pl. E. figs. 3, 4 (1881). 
Callosune confusa, Westwood, J, c. p. 848 (1889). 
Ranges from Natal to the Zambesi. 
