430 
ANNUAL RErORT OF NEW-YORK 
CURRANT. LKAVKS. 
distinctly point it out hereafter to every one into whose hands it 
may come. 
The larva is gray with two or three deep transverse wrinkles at each suture, 
the bottoms of which wrinkles are black and their summits whitish. On the 
fore part of each of the abdominal segments is a whitish band which on each 
side is interrupted by two oblique black spots. Each of these segments also 
has a pale tawny yellow spot above the breathing pore and a smaller one below 
it, with prickles placed in each of these spots. The head is white with black 
dots, and is very rough from numerous short white spines of different sizes, 
and placed upon its summit are two black prickles with numerous branches 
which are mostly white with black tips. The two upper prickles upon the 
second ring arc also black like those upon the head, thoso upon all the other 
segments are white, mostly with black tips, their branches white, towards the 
forward end of the body becoming tipped with black more and more. The first 
ring or neck is destitute of long branching prickles and has only a belt of short 
spines around its middle, similar to those covering the head. A few similar 
spines also occur upon the sides of the following segments and on the outer 
face of the pro-legs. The legs and pro-legs arc dull pale reddish, their outer 
sides black. The mouth is dull reddish and the under side of the body white 
mottled with brownish dots and short lines. 
From this description it will be seen that in its larva as in its 
perfect state this species is intimately related to the White-C. The 
Progne however has but one brood each year, the butterflies 
appearing in the month of July. The two larvae which were 
sent me were found on the morning of June 29th to have cast 
their skins and assumed their pupa form the preceding night, one 
of them suspending itself from the stalk of a leaf, the other 
attaching itself to the side of the net in which they were inclosed. 
And on the morning of July 11th both were found changed to 
butterflies, the pupa state thus lasting but twelve days. Dr. 
Harris reports having obtained a Progne butterfly so late as the 
eighteenth of August, its pupa state having continued but eleven 
days. The few instances in which I have met with this butterfly 
have all been in the month of July. 
The pupa is 0.80 long and of a gray color with obscure olive clouds. It has 
a deep excavation across the middle of its back in which on each side of the 
middle is a burnished silvery-golden spot and outside of theso spots is a black¬ 
ish streak at the margin of the wing-sheaths. On the opposite side of the body 
and above this excavation is another similar excavation, at the base of tne ven¬ 
ter and tips of the antcnnte-shcaths—these excavations giving to the pupa a 
very humped and deformed appearance A broad dusky olive 6tripc in which 
