1865.] MR. A. G. BUTLER ON NEW EXOTIC LEPIDOPTERA. 457 
along the front margin; a band of brown, irregularly denticulated 
on its inner side, along the outer margin. Body brown. 
Hab. 2 
4, Pieris Avivotans. _ (Pl. XXVI. fig. 4.) 
Upperside. Front wings bright yellow; anterior margin and base 
of the nervures black; a small black spot at the end of the cell; 
a quadrate olivaceous spot between the cell and anterior margin, 
halfway between the base and the apex; a second quadrate oliva- 
ceous spot, also touching the anterior margin, halfway between the 
first spot and the apex; nervules black at their outer extremities, 
and surrounded with olivaceous blotches ; the black anterior margin 
interrupted by yellow within the extremities of the nervules; five 
olivaceous lunules near the outer margin between the nervules, the 
first and fourth nearly halfway between the outer margin and the 
cell, the fourth little more than a spot. Posterior wings bright 
yellow ; outer margin deeply sinuated, especially near the anal angle, 
where the second and third median nervules terminate in short ob- 
tuse tails, that of the second median being the longer of the two; 
outer extremities of the nervules black. Body brown, densely 
clothed with coarse silvery and yellow hair. 
Underside. Front wings creamy ochreous, cell and apical half 
deeper-coloured ; anterior margin and base of the nervures black ; 
an irregular black spot at the end of the cell; a nearly triangular 
black spot between the cell and anterior margin, halfway between 
the base and the apex; a second black spot, oblique, elongate, 
touching the anterior margin, halfway between the first spot and 
the apex; nervules greenish, black at their outer extremities, and 
almost connected by a marginal termination of brown scales; five 
narrow black lunules near the outer margin between the nervules, 
the first three placed obliquely, the third one nearest to the outer 
margin, the fourth irregular, on a level with the first, the fifth on a 
level with the third. Posterior wings creamy ochreous, increasing 
in depth towards the base and inner margin; nervures, except the 
second and third median nervules, faintly black for their entire 
length ; two contiguous lunules close to the base above the costal 
nervure, their concavities towards the costal nervure ; an elbowed 
black marking just beyond the lunules, and touching the anterior 
margin, its angle towards the outer margin; the costal and subcostal 
nervures densely black at the base, a black spot near the base between 
them ; a transverse band between the costal nervure and subcostal 
nervule, halfway between the base and the apex, and forming an 
angle with a black termination to the costal nervure; a second mi- 
nute transverse band crossing them close to the apex, and continuing 
im an oblique zigzag to the second subcostal; five transverse angu- 
lated black bands, resembling birds in flight, between the other ner- 
vules, the first, third, and fifth halfway between the margin and the 
cell, the second and fourth only half as far from the margin as the 
others ; cell enclosing three elongate black spots, two in the centre, 
placed obliquely, the third near the end of the cell, placed longitu- 
Proc. Zoou. Soc.—1865, No. XXX. 
