THE SMALL HEATH 
81 
of the fore wing is a deeper fulvous than the upper side. 
Beyond the middle there is a fairly distinct brownish trans¬ 
verse streak bordering a pale ochreous cloud, and a grey 
sub-apical ocellus; the apex and outer margin are grey, 
blending into brown at the anal angle. The hind wing has 
the basal half olive-brown, clothed with ash-grey cilia, there 
being a cream-coloured median band, the inner edge of which is 
dentated, the outer edge blending into the ash-grey of the 
marginal area. There is a sub-marginal series of small white 
dots, sometimes outlined with black and ringed with rust-brown. 
Life of Imago. The life of this little butterfly is about 
eighteen or 
twenty days. 
Aberration.— 
This butterfly is 
subject to great 
aberration, es¬ 
pecially on the 
under side, in a 
very similar de¬ 
gree to C. tullia, 
both species being 
remarkably alike 
in pattern and 
colouring. In C. 
pamphllus all p U pa Qf the Small Heath 
phases ot aber- (cremastral process and hook highly magnified.) 
ration may occur 
in the same district. The apical spot on the upper side varies 
greatly in size, sometimes it is as large as on the under side, but 
without the white pupil, and occasionally it is altogether missing. 
In very rare instances it is well developed on one wing and 
obsolete on the other wing. On the under side the brown streak 
across the fore wing is occasionally a broad median band ; the 
hind wing is very variable in colour, ranging from pale tawny 
to ashy-grey, and the cream band is at times reduced to a small 
central spot. The ground colour of the upper side varies 
through all shades, from cream colour to deep fulvous and lilac- 
buff. Specimens of partial albinism are fairly frequent. 
Gynandromorphic examples are extremely rare. 
B.B. 
F 
