516 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
l.arra. — lli'-.id large, triangular, Of a deep shining green, with lateral yellow 
stripes; a reddish spot at the apex, paler green and granulated on the hack of the 
head behind the stripes. Body apple green, thickly covered with small greenish- 
yrllow granulations; the anterior segments semi-transparent; on each side seven 
faint greenish-yellow oblique stripes edged anteriorly with large granulations, 
the central stripes having a reddish tinge; the last stripe wider than the rest and 
terminating at the base of the caudal horn; the hit ter recurved hack wards at an an- 
gle of 20°, purplish red and thickly granulated; the anal plate with a central elon- 
gated black patoh with a larger granulation on each side. Stigmata small, round, 
and dull red. Under surface slightly paler than the upper, with a darker central 
line. Feet pale green, spotted with red; prolegs greenish, semi-trausparent. 
Length, 1^ inches. 
4. Xocfuid larva. 
Several specimens of this caterpillar were found on the beech at 
Brunswick, Me., the middle and last of August. 
Larva. — Body Hadena-like in shape. Head brown, marbled with black, smooth, 
rounded, rather small, not quite so wide as the prothoracic segment ; each thoracic 
segment successively larger than the others, the body increasing in width towards 
the middle, and gradually tapering to the end of the body. Surface of the body 
rough and granulated ; abdominal segments 1 to 8 with a double dorsal and a lateral 
row of rough tubercles; a high, narrow double dorsal tubercle on the eighth abdom- 
inal segment. Color, reddish snuff-brown, with a black dorsal line widest on the pro- 
thoracic segment, and ending on the mesothoracic, followed by a series of seven V- 
shaped black dorsal median marks en echelon; the apex directed backwards from the 
double tubercle on the back. Length, 15 mm . 
5. The bkrch span-worm. 
Hyperetis nyssaria (Abbot and Smith). 
Although the alder is one of the food trees of this not uncommon 
inch-worm, it is known to live on the beech. The specimen reared from 
the alder by us is described below. 
I have reared this moth from a large span-worm found on the alder 
September 6, at Brunswick, Me., which exactly resembled a small twig 
of the same shrub. It pupated September 20, in a broad flattened oval 
cocoon spun between the leaves, and the moth appeared at Providence 
in the breeding cage May 15 of the following year. 
Larva.— Head rather small, much narrower thau the body, somewhat flattened in 
front. First thoracic considerably narrower than the second thoracic segment ; sec- 
ond and third thoracic segments with lateral slight swellings ; the black spiracles are 
situated on dusky swellings ; on the fifth abdominal segment is a dusky dorsal hump, 
edged in front with white, consisting of two rounded conical tubercles. Supra-anal 
plate rounded with two stiff terminal seta 1 ; anal legs rather broad, with a setiferous 
fleshy conical tubercle on the upper edge. Geueral color of head and body lilac-brown ; 
head slightly more reddish, and on the back of each segment is a pair of whitish spots, 
especially distinct on the second thoracic, but wanting on the first segment. Supra- 
anal plate and anal legs sea-green, mottled with dusky spots. Length, 28 mm . 
Pupa. — Body rather thick; mahogany-brown, ends of wings and legs reaching to 
the posterior edge of the third abdominal segment. Terminal spine of the abdomen 
I .remaster) large, flattened beneath, broad, triangular; the upper and uuder surface 
with fine irregular wavy longitudinal ridges. Four lateral curved bristles and a ter- 
minal pair about twice as thick and long as the others. On the under side at the base 
of the spine are two orbicular areas like flattened tubercles. Length, 12 mm . 
