_ 
468 Prof. E. B. Poulton’s Notes on two Lipteninae. 
yellow of the ground-colour, and absence of dusky irrora- 
tion, are marks of the ‘ dry-season’ phase. The tenera 9 
on the other hand, with a greatly reduced hind-wing 
border, resembles the dry phase of the model in this as in 
the other respects. It appears, however, to be far less 
common than similis, at any rate in the Lagos district. 
“Tt may perhaps be said that on a rapid glance an 
average similis ¢ of C. tenera would pass muster as either 
‘dry’ or a ‘wet’ T. brigitta 9. The yellow of the 
irae Terias is usually paler than that of the male at 
all seasons, and the yellow of the female Lycaenid tends 
similarly to be paler than that of the male, but to a less 
extent. The absence of the dark costal border to the 
fore-wing, passing inward from the dark apex, is character- 
istic of the female of both species. The yellow of Citrino- 
phila, being slightly tinged with ochre, is hardly so 
brilhant as that of Terias, but there can be little doubt 
that it would be difficult to distinguish the two insects 
when flying, or even when settled. 
“The upper surface of the yellow examples of the 
larger species of Citrinophila (C. erastus Hew., or probably 
a closely allied species or subspecies), captured by Lam- 
born at Oni, differs in size and shape and to some extent 
in colour from C. tenera. In all these respects it approaches 
the aspect of Terias regularis Butl., a near ally of 7’. brigitta. 
The under surface of this Citrinophila resembles, strongly 
in the female but less so in the male, a pattern common 
in the Pierine genus Mylothris ; and the same is true of 
the upper surface as well as the under of the creamy white 
female of typical erastus, although the yellow upper 
surface of its male is mimetic of Terias. The resemblance 
of the white female to Mylothris was described by Eltring- 
ham in 1910 (ibid., p. 90, pl. ix, fig. 30). See also Proc. 
Roy. Soc., B., vol. 91, 1920, pp. xxiv, xxv. 
“The general resemblance of Cutrinophila to Terias 
extends also to 7’. senegalensis, but is much less obvious 
in this case than in the other two. 
“It is worthy of note that Liptena flavicans Sm. and 
Kirb., specimens of which are also in Mr. Lamborn’s 
collection from Oni, at once recalls the dry-season female ° 
of Terias brigitta, though the brownish-ochreous hue of 
the former insect is dull in comparison with the clear 
yellow of the latter.” 
i 
