900 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
\\ itli an obscure Stripe p.iler than the greeu in the middle of the back. Both the 
t horacic and abdominal Legs deep purple-red. Anal legs moderate, green on the sides. 
Lateral ridge forms B white and yellowish line. Beneath, two subventral dark 
stripes edged on each side with white. Length, 20 mm . 
L9. Ceometrid larva. 
This caterpillar occurred on the hackmatack, in Maine, August 3. 
Larva. — Head not so wide as the body, rather small, the front, especially towards 
apex, much flattened. Second and third abdominal segments swollen on the sides, 
and eighth slightly humped and black above. Supra-anal plate rough above, ending 
in 3 stout, piliferous tubercles below. Surface rough. Body dark green, with vertex 
of head, upper part of third thoracic segment, and of second and third and rest of 
abdominal segments blackish, as if scorched by a fire. Between these patches the 
upper side is dull rust-red, as is the head in front. Sides of body dark green, tinged 
with dark. All the thoracic and abdominal legs dark rust ; sides of second aud 
third abdominal segments blackish. Length, 23 mm . 
20. Geometrid larva. 
This caterpillar occurred on the hackmatack, at Brunswick, Me., 
August 30. It began to pupate September 25. 
Larva. — Body slender, cylindrical, a little thickened on pre-anal, and thoracic seg- 
ments. Head very deeply cleft; as wide as the body in the middle but not so wide 
as the prothoracic region. Prothoracic segment much enlarged, with a hump 
on each side on the front edge. On fifth abdominal segment a pair of very promi- 
nent lateral long tubercles. A.nal legs moderately large, the dorsal acute tubercle 
moderate. Body dull brick-red, with a squarish patch on the front of each seg- 
ment marbled with black and whitish. There is a median black line on the thoracic 
region. Body glaucous, grayish white under the last one-third of abdomen. It 
may be recognized by its dull, brick-red body, checkered with dark, by the humped 
prothorax, and by the two prominent tubercles on fifth abdominal segment. No 
warts or papilla, the body being a little wrinkled. Length 20 mm . 
September 25, fully grown larva. — Prothoracic segment not so much humped as when 
young. 
21. Geometrid larva. 
This caterpillar occurred on the hackmatack, at Brunswick, August 
4, 1882. 
Larva. — Large, dark, twig-like, with deeply notched head. Head large, as wide as 
the body, very deeply notched, each tubercle acutely conical. Prothoracic shield 
square, with a flattened boss on each side of front edge. Body cylindrical, with a 
lateral conical conspicuous tubercle on each side of the segment in front of the first 
pair of abdominal feet. Lateral line not prominent. On top of segment in front 
of supra-anal plate a transverse interrupted ridge, composed of two oblique, yellow- 
ish brown tubercles. Skin somewhat roughened, twig-like, but darker than twigs 
of hackmatack. Anal legs large and broad, each ending behind in a spine. Supra- 
anal plate large, flat, triangular. Skin with raised black and white papillae. Length, 
22mm. 
22. Geometrid larva. 
This caterpillar occurred on the hackmatack August 18 to 23, 1883, 
in Maine. It rests like Drepanodes varus, head down, and lengthwise 
to the twig, which it resembles somewhat, especially the darker ones, 
aud is easily overlooked. 
