WILLOW CATERPILLARS. 563 
margin, makiug the usual " "as in the allied species. The fourth line is slightly 
S-shaped in its costal third. Outside the fourth line is a subterminal, somewhat zigzag 
row of black spots, some of which are often faint or obsolete. In the discal cell there 
is usually a faint oblique line that seems to be a continuation of the third line, though 
it does not reach the costa, and the end of the cell sometimes appears like a short 
line. There are three oblique shades of brownish olive, more or less distinct, that 
cross the wiug parallel to the second line; the first, beginning on the costa inside 
the basal line, faintly borders that line to the submedian vein, and is seen below that 
vein on the third line; the second, outside the second line through its whole course, 
is darkest next the line; the third from both sides of the fourth line to the middle of 
the outer border faint, except along the line. Just outside the S-part of the fourth 
line are three grayish-yellow spots with a few reddish-brown scales. Hind wings 
pale smoky gray with a faint whitish line from the fourth of the forewings to the 
anal angle. Beneath, the forewings are about the color of the hind wings above, 
pale along the costa and terminally ; the hind wings are paler with a dark transverse 
line. (French, Can. Ent., xiv, p. 33.) 
13. Euclea pcenulat a (Clemens). 
This caterpillar has been found feeding on the willow September 19, 
by Professor French, who states that it pupated September 30 in the 
manner usual to the genus, the moth appearing June 17. 
Larva. — In general outline somewhat elliptical, the sides and the back tapering 
from the middle to both ends. Length when full grown, .56 inch ; width and 
height, in the middle, nearly .25 inch. Back dull purplish brown. A fine dorsal 
line and a broader one on each side, which alternately expands and contracts, of dull 
purplish orange. On each joint, except the twelfth, is a pair of impressed spots, 
which appear whitish when seen in certain lights. A subdorsal orange ridge with 
spiny tubercles which are coucolorous with the ridges, except that between the 
last two there is a shorter black tubercle without spines ; the second and third from 
each end of the body are larger than the others. A similar tubercled ridge is found 
in the region of the stigmata, except that it does not contain any black tubercles. 
Subdorsal space dull purplish orange, bordered above and below with purplish 
brown, each joint containing two whitish impressed spots similar to those on the 
dorsal space ; below the lower line of tubercles dull orange. (French.) 
Moth. — Body dark reddish brown. Forewings dark reddish brown along all the 
borders, with a large, central pea-green patch, extending from the base of the wing 
to the subterminal portion, bordered narrowly on the inner side and behind with 
white, and deeply indented opposite the middle of the inner margin, where there 
is a bright brown patch in the reddish-browu border. Hind wings yellowish brown. 
(Clemens.) 
14. Notodonta stragula Grote. 
(Larva, PI. v, fig. 1.) 
This singular caterpillar was found August 25, at Brunswick, Me., 
l>y Mr. H. H. Wilder. It has the peculiarity of raising and depressing 
the two large dorsal horns in the middle of the body ; when at rest 
they are depressed, appearing simply as humps; when erect they are 
somewhat larger and evaginated, with their pseudojoints like those of 
a telescope ; probably they serve to frighten away ichneumons, * My 
specimens molted for the last time August 31. 
