4:2 THE VIDURA BUTTERFLY. 
lustre ; a strongly marked broad snow white band 
passes in a straight line through the middle of both 
pairs to the anal region of the lower wings, where 
it becomes narrower, and, after several minute 
curves, stretches obliquely to the interior margin ; 
between this and the hinder margin is a very deli- 
cate blackish thread, composed of small linear frag- 
ments, in close contact, arranged in a regular curve 
across the fore wings, slightly interrupted and 
curved in the hinder, forming in the anal region a 
delicate edge along the medial white band; the 
lower wings are besides marked, within the poste- 
rior margin, with a row of oblong spots of the ground 
colour, inclosed within a double series of white 
lunules, and continued to the anal region by two 
very large black ocellate spots, the exterior one 
being surmounted by a large oblong patch of a 
bright orange tint, abruptly terminated at its con- 
tact with the black striga, the interior one occupy- 
ing the anal appendage, being covered internally 
with a white are sending off a short oblique line 
along the inner margin ; the space between the 
ocellated spots is gray, irregularly irrorated with 
black, and marked in the middle by an indistinct 
white lunule ; a brilliant white thread passes along 
the entire anal region, exterior to which is a con- 
tinued black marginal thread, and the whole ter- 
minated by a grayish fringe. The body with a 
yarying bluish or sea green tint above, covered 
