PIERIN.^:. 
149 
blackish central, diffused, usually very limited ; nervular hind-marginal 
black spots (narrowed and acuminate inwardly) usually small (some- 
times very small) and separate, but in the darker specimens larger, 
rather diffused, and the upper three touching each other; rarely a faint 
diffused trace of lower part of discal blackish ray between radial nervule 
and submedian nervure. Under side. — Fore-iuing : white, occasionally 
with a faint sulphur-yellow tinge at base ; a black disco- cellular ter- 
minal dot ; apical patch varying from yellowish to reddish-creamy, 
more or less irrorated finely with dark-grey ; its inner border rather 
narrowly dull pale -orange, ma^'ked out from the broad outer por- 
tion of patch by an ill-defined (sometimes scarcely traceable) greyish 
submacular ray. Hind-vjliig : whitish, sandy-whitish, yellowish, or 
reddish-creamy, more or less irrorated (and occasionally in parts also 
slightly striolated) unequally with dark-grey ; discal ray very feebly 
expressed by a dusky mark on costa beyond middle, and another on 
disc between third and second (or sometimes as far as first) median 
nervules ; costa from base to beyond middle edged with orange or pale 
orange, sometimes rather faint ; a terminal disco-cellular black dot, 
bounded internally by a small (sometimes very small and faint) orange 
mark. 
$ White or yelloiuish-iuliite (ixtrely ijcde-ydloiv)] apical patch ivith 
the orange paler and narroiuer than in $ ; traversed superiorly (iiear its 
inner edge) and hounded inferiorly hy a Uach curved ray of variable 
development, and bordered more broadly by blach outtvardly, or ivith the 
orange replaced by a much-reduced (sometimes almost obsolete) scries of 
dull-yellowish or dull-creamy separate marks. Fore-iuing : inner-mar- 
ginal blackish stripe more or less mixed with grey except at extremity, 
diffuse superiorly, in the most strongly-marked examples very slightly 
encroaching on discoidal cell near base, sometimes very narrow and 
faintly marked, rarely obsolete from a little before middle ; a well- 
marked usually conspicuous, rounded, terminal disco-cellular black spot, 
Eind-iving : costal stripe as variable in darkness and development as 
inner-marginal stripe of fore- wing (in one example obsolete) ; discal 
ray also variable, but its lower portion usually well-expressed and 
sometimes rather broad ; hind-marginal black almost always larger 
than in and usually united to form a border (broader superiorly), 
emitting strong nervular dentations, of which the middle two or three 
sometimes meet discal ray. Under side. — Hind-wing and apical patch 
of fore-wing always yelloiuish or reddish-tinged, duller than in ^, being 
usually more closely and evenly irrorated with dark- grey. Fore-iuing : 
basal sulphur-yellow always more developed, sometimes very wide ; 
pale- orange on inner border of apical patch traversed (and in some 
specimens more or less obliterated) by a dusky-blackish ray ; inner- 
marginal stripe always fainter than on upper side. Hind-iving : discal 
ray exceedingly variable in development, sometimes barely traceable, 
or presenting only the portions shown in ^, but often dark, and want- 
