39 
the pupa state September 12th, 13th and 14th, moths appeared 16th 
to 22d and on to October 1st. 
The moth expands from eight-tenths to nearly one,inch; body very 
slender and usually a little less than half an inch long. Antennae naked 
quite slender, and tapering towards the tips; legs rather stout. Gen¬ 
eral color of the upper side a pale ocher-yellow shaded with brown in 
front and along the lateral margin, lighter portions slightly iridescent. 
Examined more closely, the front wings are found to be divided into 
two areas by the colors, the inner (anterior) half, except the costal 
margin, pale semi-transparent usually with a very distinct iridescent 
reflection, sometimes coppery. The outer half and anterior costal margin 
fuscous-brown; near the exterior angle an elongate yellow dot, border¬ 
ed posteriorly and interiorly by a dark, often black shading. Seconda¬ 
ries or posterior wings pale yellow, transparent, usually with a distinct 
coppery luster, a dusky space at the exterior angle. The color of the 
fringe corresponds with the color of the wings. 
Underside of a pale coppery yellow, the depth of color corres¬ 
ponding with the color of the upper side. 
Abdomen compressed, dark brown with paler rings at the sutures; 
eyes very dark brown or black, antennas vary in color, some are dark 
brown almost black, others rather pale. 
The original description by Guenee is as follows: “Length 27mm. 
The anterior wings of a yellow ocher color very pale, shining, and * 
iridescent, powdered with blackish in places; with the two median 
lines blackish, oblique, parallel and strongly and. irregularly denticu¬ 
lated. A cellular blackish spot rather large, somewhat interrupted. 
An oblique apical point limited posteriorly and interiorly by a black 
shading. Posterior wings much paler, with a triangular dash at the 
apex, and a denticulate line of blackish. North America; one female.” 
As before stated, they eat elongate holes between the veins of the 
leaves; sometimes continuing to enlarge these until only the veins are 
left. They will often bore directly into a head for the depth of two 
or three leaves, whereas, so far as I have observed, the larva- of Pieris 
rapce will not bore into a firm head, they will manage by gnawing 
at the outer leaf to cause it to draw slightly away from the head and 
then eat holes in it; but the larva of the P. rimosalis will bore, at 
least for a short distance, directly into a firm head. They appear, as 
a general rule, to prefer working from the inner or upper side of the 
leaf, but there does not seem to be any great uniformity in this respect. 
I have not as yet, noticed any parasite preying upon them, though 
it is probable another season will bring some little friend of this kind 
to our aid. 
The same remedies tried upon the European cabbage-worm were 
tried on this species, in fact the two worms worked very harmoniously 
on the same cabbage, the butterfly larva, as is well known being of 
a proverbially quiet and peaceable disposition, avoiding as far as pos¬ 
sible encroaching upon the premises of other insects. But this species 
appears if possible to be still more tenaceous of life than the import¬ 
ed worm; it will eat away apparently unconcerned when literally coat¬ 
ed over with lime; salt and brine seem to have no effect upon it; 
strong ashes and weak lye will kill some, especially the younger ones, 
but to no great extent unless of sufficient strength to injure the cab¬ 
bage. Other applications were also tried with little or no better effect 
