166 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
orange, spotted with vivid black. When in motion a rich, velvet-black stripe appears 
two-thirds of an Inch from the head. (Harris.) 
Cocoon. — Like soft, brown-gray paper in texture; one and one-half inches long 
and half an inch wide; bordered on all sides by B loose web; oval : convex above and 
perfectly flat and very thin beneath. 
Moth. — A large stout-bodied moth, white with a large, high tuft of long, metallic, 
brown scales along the thorax : wings short and broad, rounded at the apex with two 
basal bands and a broad, slightly curved submarginal dusky band, interrupted by 
the white veins; hind wings gray with a white border on which are two interrupted 
gray lines. Males with broadly feathered antenna-, and expanding ty to If inches, 
while the females are much larger, the wings expanding 2} to 2f inches. 
The following species of Noctuidae are found on oaks of different 
species: 
222. Charadra deridens (Guen.). 
This white hairy caterpillar occurred on the oak August 28. It was 
first reared by Dr. Lintner (Coutr. iii, 157), in New York, and Septem- 
ber 16 made a thin cocoon between the leaves. 
The caterpillar also inhabits the elm and birch and spins a cocoon 
late in August in a case between two leaves; the eggs were, as ob- 
served by Mr. Thaxter, laid July 4, singly or in rows on the under 
side of a leaf, the caterpillar hatching July 11, molting six times, the 
last time August 6. 
Egg. — Flattened, ribbed, whitish. 
Larva. — When hatched, light green, on segm ents 2, 3, 4, 5, 6, respectively, a large, 
roundish, red sub-dorsal spot. Head large, tinged with brown ; body tapering con- 
siderably posteriorly, and sparingly clothed with long colorless hairs. Length 2. 5 mm . 
(Thaxter, Papilio iii, 11.) 
Larva before last molt. — Head white, rounded, a broad jet-black transverse patch 
on the front above the apex of the clypeus ; the latter edged with black, forming a 
black triangle connecting below with a black stripe on each side of base of labrum; 
the latter black-brown, body cylindrical, rather short and thick; sutures deep; head 
uot so wide as the prothorax, the latter rather full and large, longer but not so wide 
as the meso-segment, and with a yellowish-white tinge like the head. Rest of the 
body white, with a very slight greenish tinge, with small tubercles concolorous with 
the body, from which radiate fascicles of long white fine hairs of unequal length half 
as long as the body. Length 21 mm ; thickness 5 to 6 mm . 
Full-fed larva. — After the last molt the head is jet black in front, except along 
back of vertex, which is white, and sends a median line betweeu the two large black 
patches. In front are three triangular whitish patches, one on the clypeus, and a 
longer one on each side. In front black, face black, labrum white. Body dull white, 
tinged with pale glaucous-green, with very long white hairs arising from small w T hite 
warts. Length 38 mm . 
Moth. — Fore wings broad, subtriangular, a little prolonged at the apex, of an ashy 
white washed with yellow, with several waved blackish lines; those of the middle of 
the wing more marked, one from the costa passing backward, forming a great JJ aud 
containing in its middle a round dot pupilled with brown; the other contiguous and 
opposed to that of the internal border, containing in the middle the base of the me- 
dian shade, aud having the external side formed at the expense of the augulated 
line. This last lunulated, followed by a similar line near the submarginal. At the 
end of the discoidal cell is a blackish spot, and under the costa, before the upper [J 
a mark of the same color. Hind wings rounded, white on the edges, with margiual 
lunules; antennae short, well feathered. Palpi short, externally brown, with the 
last joint white. Expanse of wings 40 mm . (Gueue'e.) 
