(( exivy 3 
interno-median interspace reaches right up to the trunk of the 
median vein itself. This condition is accurately reproduced 
in Dr. Longstaff’s figure. Besides this distinction, there is a 
well-marked difference in the scent-scales themselves. Those 
of P. sevata are, as already noticed, comparatively short. 
Those of the present form are more than half as long again 
as those of P. sevata, and considerably longer than those of 
P. buniae, P. ausia and P. phaloe. They are, moreover, of a 
different shape from those of the rest, the tapering from base 
to apex being much more gradual. 
A female captured by Dr. Longstaff at the same time and 
place as the four P. sevata already mentioned (Jan. 11, 1913) 
must, I think, be referred to the present form and not to 
P. sevata. It corresponds with the male in size and shape, 
and has, like that sex, a well-marked dark spot at the end 
of the cell on the underside of the hind-wing, just anterior to 
the third median branch. The present form may be a sub- 
species of P. sincera, described by Weymer from a male 
specimen captured on the sea-level at Guayaquil, Ecuador. 
It differs, however, from Weymer’s figure and description in 
some particulars. 
Another species of this section of Pieris, at present un- 
described, is represented in the Hope Collection by a male 
and two females from Lower California. This species is much 
smaller than the other members of the buniae section, and 
differs considerably from them in aspect, especially by the 
greyish-brown shading of the underside. Its scent-scales are 
very nearly the longest known to me. They are of like 
character with those of the last species (from Venezuela), but 
are appreciably longer. 
The nearest relatives of this Lower Californian species appear 
to be P. amaryllis, Fabr., from Jamaica, and P. josepha, 
Godm. and Salv., from Central America. P. jyosepha, though 
a much larger insect, resembles it in general appearance and 
in the character of its scent-scales. The latter are actually 
the longest known to me in this genus, being more than half 
a millimetre in length, and easily visible to the naked eye. 
They are only exceeded in length, so far as I am aware, by 
those of two or three species of the genus Huphina. 
