918 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
black spot, like t li«- eye in ■ peacock 9 ! feather. To describe the wing and its niark- 
.>rv fully — tin- basal half of the wing is white, unspotted, except a short, trans- 
verse brown band, extending from the inner edge, not quite to the middle of the 
wing. On each side of this band is a row of two or three minute dots. The middle 
band is broadest OH the hind edge. Beyond and arising from the co.^ta, where they 
are broadest, and extending to the opposite side of the wing, are six brown lines, 
alternating with white interspaces. These lines run together in the middle of the 
wing, brown dots beiug added, but which end as distinct lines on the inner edge of 
the wing. The three outermost lines are much curved, and, with the curve of the 
fringe, form a circular area, in the middle of which, on the base of the fringe, is the 
curvilinear, rather thick, dark brown spot. The long fringe on the end of the wing 
is white at base and brown at the end. The hind wings are pale brown, acutely 
pointed, with a long silvery fringe. The tibia- and tarsi of the fore legs are brown- 
ish, while the hind legs are white, with a long fringe on the hindermost tibia;. The 
length of one fore wing is .1-. and the length of the body is .13 inch. 
The cocoon is white, tough, dense, slender cylindrical, and .20 inch in length. It 
is fastened by one side to the leaf, and differs from that of the apple Bucculatrix in 
not being ribbed longitudinally. A minute, beautifully brilliant green ichneumon 
(Chalcis) fly seems to attack in considerable numbers the chrysalids of this insect, as 
nearly half of those reared by me turned out one of these parasites. It is a species 
of a genus allied to Eulophus, having the antenna? pectinated, the terminal joints 
throwing off five long branches. It differs, however, from Eulophus among other 
characters by having a short, thick body, a small, conical abdomen, and short, thick 
antenna?. The forewings are broad, triangular. 
We noticed these beautiful moths again in 1881, at Brunswick, flying 
about a cedar hedge in considerable numbers from the middle of July 
until early in August. 
2. The bag-worm. 
Thyridopteryx ephemerccf^mm. Haw. 
Fig. 305. — The Bag- worm. (Thyridopteryx ephenitrceformis Haw.) 
a. Larva, fully grown; b, male chrysalis : c. female moth : d, male 
moth : e, bag containing female chrysalis, with eggs : / ftilly grown 
larva carrying its bag; ft, yiuinj: worms in their i 
The general abundance of this pest upon cedars and some other trees 
in southern Illinois calls for special mention. The small conical bags, 
