MAPLE CATERPILLARS. 403 
of life from the time the egg is laid until the moth appears was found to 
be fifty- two days. " The eggs were deposited April 30, and the first 
moth hatched June 21, the last July 10. During former years I have 
found the larvre of this species on the willow and other bushes, and 
had them spin up to the last of September and come out as moths the 
forepart of November. In other instances they passed the winter as 
chrysalids." There are from two to three broods during a season. Mr. 
Hill has claimed that H. edusa and lunata are possibly sexes of one 
species, and Mr. Bean, as well as Mr. Leubner, have concluded that 
these two species, with Saundersii, were all the same species. From 
one brood of eggs deposited by lunata the three forms, lunata, saun- 
dersii, and edusa, were obtained, thus reducing two of the forms to sex- 
ual varieties, lunata being the female. 
Mature larva. — Head flat, sloping ; six ocelli, in shape and number resembling larvne 
of Catocake. Body marked with three dorsal stripes and three on each side, alter- 
nating light and dark; but these are less distinct, approaching a uniform brownish 
drab ; the white spots also less distinct. First and second abdominal legs about half 
the length of The others. A little paler beneath than above, with an elliptical red- 
dish brown spot in the center of each segment. Length, 1.45 inches. 
Pupa. — Wing-cases covering five segments in front. Tip of abdomen coarsely fur- 
rowed and punctured, ending in two long hooks, with several shorter ones arising 
from the corrugated surface a little way from these. Length, .80 inch. (Freuch.) 
Moth. — Male: Thorax, abdomen, and wings of a fine red sandy brown color; the 
first ring of the abdomen with an ash-colored spot. Anterior wings with two whitish 
oblong spots on the external edges of each ; one near the tips, the other at the lower 
corners. A small whitish bar crosses the fore- wings about a quarter of an inch from 
the body, and next the shoulders is a spot of the same whitish color. Posterior 
wings brown, with an oblong whitish spot placed along the external edges, reaching 
from the abdominal almost to the upper corners. Under side, wings pale sandy-col- 
ored, except a few small round dark spots dispersed over them, but scarcely dis- 
cernable. Margins of all the wings dentated. (Drury.) 
Female (lunata).— The head, thorax, abdomen, and wings hazel-colored. Anterior 
wings with a waved line, of a dark brown color, placed near the anterior angle, be- 
ginning at the posterior and ending at the external edge. At the shoulders and' 
along the anterior margin are several small dark brown clouds and marks that pro- 
duce a darker shade. Posterior wings with a series of narrow transverse waved 
lines, extending from the middle to the external edges. All the wings are dentated. 
Under side, the breast, abdomen, and wings are all of a paler hazel color. Anterior 
wings dappled with dark brown on the middle of the anterior edge# and spotted with 
minute short brown streaks, as well as the posterior. (Drury.) Expanse of wings, 
55 mm . 
35. The maple semi-looper. 
Ophiusa bi8triaris (Hiibner). 
Order Lepidoptera ; family Noctuid^e. 
, Late in July feeding on the silver maple, a brownish gray caterpillar 1.40 inch long, 
with the first pair of prologs small, the worm having a semi-looping gait. 
When about to go into chrysalis it cuts through a portion of a leaf 
of the tree on which it has fed, and turning it over constructs a snug 
little case, fastening it up closely and carefully with silken threads, and 
