99 
DESCRIPTION. 
Larva — A slender caterpillar from 1J to inches in length, 
general color a soft dusky gray, with a peculiar silky look, dark¬ 
ening forward to the head and first thoracic segment, which are 
ihining black. Distinguished especially by large, irregular, slnn- 
ng white or dusky areas on the thorax. 
Body slender, a little widest in front. Head but little narrower 
:han first thoracic segment; shining, irregularly transversely rugose, 
nost so on the frontal area; anterior part of frontal triangle with 
i conspicuous semicircular groove opening forward; head with the 
isual Y-shaped mark; outside of the arms of this a parallel groove 
m each side, forming a Y, open posteriorly, the anterior ends o 
:hese grooves curving inward to the ends of the clypeus. ike 
latter pale and soft; labrum brown, base paler, highly protractile, 
because of the flexibility of the clypeus. Labium membranous, 
retractile, with a very long, median, spine-like spinneret, and tv o 
slender palpi, three-jointed, the first joint a thick truncate cone, 
the second slender, cylindrical, the third minute, about one thin 
is long as the second, with a very long tapering spme-like hair ao 
the tip. Maxillae thick, fleshy; palpus two-jointed, inner lobe with 
five or six slender peg-like teeth distributed upon its flesh v 
surface. 
Surface of the head with scattered long hairs. Antennae extraor¬ 
dinarily long and slender when protruded, but remarkably pro¬ 
tractile, the first joint being white and membranous, and about as 
long as the third, which may be wholly retracted within it. 
Mandibles nearly black, blunt; lower mouth parts pale, except the 
labium and the; distal portions of the maxillae, which are dar ei. 
Ocelli six, in an irregular curve opening backward immediately 
behind the base of the mandible. 
First segment shining black, with obscure irregular transverse 
rugosities, front margin brown; posterior lateral angles with a 
large oblique black spiracle. Second segment chiefly shining 
white, with three Y-shaped markings of the ground color,—one 
median, opening backward, and two lateral, opening to the from. 
Suture between second and third segments, as well # as anterior 
margin of the third, also shining white, with a large circular white 
area on each side of the middle line. Sides of this segmen wi 1 
a large shining white patch, bifid posteriorly by a process ot the 
ground color. Remaining segments from the fourth to the e e\en 1 
with four dorsal, silvery, shining piliferous spaces, within wine i 
the hair springs from a minute black point, these spaces graclua y 
diminishing in size from before backward. On the sides ot these 
segments two rows of similar shining spots, one above the 
stigmata, the other below; the former _ composed of one spot to 
each segment above and behind the spiracle; tne lattei e wo 
such spots below the spiracle, one before and one be hint . 
the sixth to the ninth segment a small black pit behind and. be¬ 
low the shining piliferous area of the upper row, forming a 
