62 
SATYRIDAE 
is yellow-ochreous; the wing cream-coloured and finely 
reticulated with brown ; the anal point is red-brown, with 
amber tipped spines. Some specimens are irregularly dotted 
all over with minute brown rings. The pupal stage lasts 
from fifteen to twenty-five days. 
As an instance of very abnormal development of the stages 
of this butterfly, one of the larvae which hatched on August 
27th did not attain full growth until September 24th of the 
following year, and it pupated on September 28th, having 
been in the larval state just thirteen months (397 days), a 
very unusual period. 
Imago. The average expanse of the wings in the male is 
53 mm., in the female, 58 mm. Sexual difference is distinct 
in the colouring of the under surface. The female is always 
more or less ochreous tinted on the apex of the fore wing 
and the whole of the hind wing, also usually along the costa 
of the fore wing on the upper side. The female is also larger 
than the male. 
Upper Side . The ground colour of both sexes varies from 
pure nacreous-white to primrose-yellow, marbled with deep 
black. The principal markings comprise a broad oblique 
angulated median band crossing the fore wing from the costa 
to the anal angle, also a narrow sub-apical bar, and irregular 
sub-marginal bands on both fore and hind wings. The black 
band on the hind wing encloses a series of ocellated spots 
intensely black with pale blue centres, and sometimes encircled 
with light scales in the males, and generally so in .the females. 
The basal black markings are greyed by the density of the 
white or yellow cilia, and are arranged in a cross-like pattern, 
leaving a large oval white or yellow r basal marking on each 
wing. The neuration and margins are outlined with black ; 
the fringes are also spotted with black. Under Side. The 
under side is similar in pattern to the upper side, but always 
pale on the hind wings, being dusted over with light scales. 
Life of Imago. The life of this butterfly is between twenty 
and thirty days. 
Aberration. The colour aberration of the under side is 
remarkable, ranging from pure white to clear primrose-yellow 
in the males and in the fore wings of the females. The hind 
wings of the latter vary from white to straw-yellow and the 
