878 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
20. Torlrix *p. 
This is in general form and markings of the body lik.- Tortrix fumiferana, but the 
bead and prothoraoic shield are entirely different. Head flattened, a doable dark 
lateral line, the two connecting with the dark lower edge of the prothoracic shield, 
which tonus a conspicuous lateral line. Head and prothoracic shield copal-brown ; 
front edge «-t* the olypens whitish, the white extending around the side of the head 
above the eyee. Kadi abdominal segment with four dorsal and three lateral pale- 
green piliferous warts, which are conspicuous on the reddish-brown body. Supra-aual 
plate and anal legs dull greenish. Length, \H mm . On leaves of the hemlock August 
20 to 30. The larva before pupating spins a thin silken cocoon among the leaves. 
21. The hemlock leaf-scale. 
Aspidiotus abietis Comstock, 
At Ithaca, X. Y., Professor Comstock 
found this scale quite common on the lower 
surface of the leaves of the hemlock. 
Scale of female.— The scale of the female very 
closely resembles that of Aspidiotus pini, except 
that it is usually more nearly circular. This is 
probably due to the difference in the shape of the 
leaves which the two species infest. The color 
of the scale is dark gray, often approaching black, 
with the margin lighter, and sometimes with a 
bluish, brownish, or purplish tinge. As with A. 
pini, in many specimens of the fully-formed scale 
the part covering the exuvia is more or less dis- 
tinct, appearing like a small scale with a light 
margin superimposed upon a larger scale. Length 
of scale, 1.3 to 2 mm (.05 to .08 inch); width about 
nine-tenths of the length. 
Female.— The last segment of the female pre- 
sents the following characters : The groups of 
The mesal and second lobes are well developed ; their 
distal extremities are rounded ; the third lobe of each side is small and acutely 
pointed. The plates are rather short and irregularly fringed ; there are two between 
the mesal lobes; two between each mesal and second lobe : three between each second 
and third lobe, and usually three laterad of each third lobe. The spines of the dorsal 
surface are as follows: One laterad of each mesal lobe : one upon each second and 
third lobe, and one laterad of the most lateral plate. Each ventral spine, with the 
exception of the first, which is wanting, is situated laterad of the corresponding dor- 
sal spine. 
Scale of male.— The scale of the male is as wide as that of the female and a little 
longer. It resembles that of the female in color. 
Male. — The male is of bright orange color, with the thoracic band very dark 
brown, nearly black. Described from many specimens of each sex. (Comstock.) 
I have found this species not infrequently on the leaves of the hem- 
lock at Brunswick, Maine, in May. Fig. 298 is from camera drawings. 
Besides the foregoing, the following geometrids were common on the 
hemlock August 14, p. 867, Nos. 15, 16, 17, 18, 19, 20. 
Also the following: 
22. Pa rogy ia paral Ida . 
CI 
FlG. 298.- Hemlock leaf-scale, 
enlarged. Packard del. 
spinnerets are wanting. 
