THE BATH WHITE 
3T5 
Male . (Upper Side.) The ground colour is white; the 
apex of the fore wing has a broad black patch which is dusted 
over with white scales, chiefly on the costa and outer margin, 
where the black is broken up by four white spots. A large 
black blotch, varying in shape, extends from the costal margin 
enclosing the end of the discoidal cell; the white outline of 
the cell and base of the nervures cut up the black. The 
hind wing is delicately tinted with very pale pearl-grey, and 
there are black tips to the nervures. 
[Under Surface.) Both fore and hind wings are similar in 
pattern to the upper surface, but all the markings are replaced 
by ochreous-green dusted with black scales*, the whole pro¬ 
ducing a strikingly beautiful tessellated pattern of white 
and green. 
Female. The female differs from the male on the upper 
side in having an additional black spot near the anal angle 
of the fore wing, and the markings of the hind wing are of a 
deeper grey, which blends into blackish near the outer angle 
and along the upper sub-marginal area. 
Both sexes have the front of the thorax ochreous shading 
into blackish over the rest of the thorax and abdomen. The 
antennae are black and 
white with ochreous tips ; 
the legs are white. 
In the spring brood the 
butterflies are smaller, 
with less-developed apical 
markings on the fore wing, 
and on the under surface 
the markings are of a 
deeper green. This vernal 
form is known as ab. 
bellidice, Och. 
Life of Imago. The Bath 
White passes the winter in 
the pupal state, and the 
! life of the butterfly is 
probably between three 
and four weeks. 
