ELM CATERPILLARS. 271 
segment before and diverging behind, and extending on each side to the tips of the 
twelfth segment; on the fourth segment, between two orange-colored tubercles, 
begins a white dorsal line, edged with green, which also extends to the tip of the 
twelfth segment. The lateral lines on the first three segments are edged within or 
above with pink or purple, and sometimes a narrow purple edge borders the lateral 
line above to the end. On the eleventh segment are two very minute orange tuber- 
cles, and a few very small yellow ones on the sides of the body. A yellow lateral 
line just above the feet on the first three or four segments. Spiracles orauge. The 
minute tubercles on the fourth and eleventh segments emit each a black hair, and 
the other tubercles small whitish#hairs. Twelfth segment with the prolegs elevated 
when the insect is at rest. (Harris.) 
Moth.— Light cinereous, fore wings lighter than the thorax. Two transverse 
darker lines, inclosing an obscure yellowish band. The first line straight, the second 
oblique, with two large teeth pointing inward, on the submediau interspace, and on 
the fourth subcostal veinlet. A submarginal line twice bent, obtusely angulated in 
the second median interspace, and on the subapical space. Wings dark at the base 
and at the ends of the venules. Hind wings nearly white, not discolored. Beneath 
uniformly pale ash. Expanse of wings 1.10 to 1.25 inches. This moth can be dis- 
tinguished from other Notodontians by the uniform cinereous .tinge, the three trans- 
verse lines on the fore wings, the yellowish band limited within by the straight line, 
without by the oblique waved line ; also by the plain outer half of the wing, inter- 
rupted near the margin by the rather obscure twice waved darker line, and by the 
plain hind wings. 
42. Deilephila lineata (Fabr.). 
Plate III, fig. 3, larva. 
The larva of this species occurred on the elm, according to Mr. Joseph 
Bridgham, of Providence, who kindly presented me with the excellent 
colored sketch on plate III. It also feeds on the leaves of the apple, 
grape, plum, currant, gooseberry, buckwheat, turnip, watermelon, 
chickweed (Stellaria), bitter dock (Rumex obtusifolius), evening prim- 
rose (CEnothera biennis), common purslane (Portulaca oleracea). From 
this it will be seen that the larva, which is to be found in July, is a 
general feeder. The moth appears in September. It ranges from 
Maine and Canada to Mexico and the West Indies. The caterpillar is 
infested by a tachiua fly. 
Larva. — About 3 inches long and quite variable. The most common form is of a 
yellowish green color, with a row of prominent spots along each side, each spot con- 
sisting of two curved black lines inclosing a crimson patch above and a pale yellow 
line below, the whole being connected by a pale yellow stripe edged with black. In 
some instances these spots are disconnected, and the space between the black crescents 
is of a uniform cream color. The other form of the larva is black, with a yellow line 
along the middle of the back and a double series of yellow spots and dots along the 
side. Caudal horn, yellowish orange towards the extremity, and rough. 
Pupa. — The pupa is light brown, the head-case compressed laterally and prominent; 
tongue-case not apparent. (Clemens.) 
Moth. — Body and fore wings olive brown, with three parallel white stripes along 
each side of the thorax ; fore wings with a buff stripe reaching from the base of the 
hinder edge to the apex; the hinder edge of the wing narrowly edged with white, 
and the veins marked with white ; hind wings black, with a central reddish band in- 
closing a whitish spot near the hinder margin ; the outer margin is narrowly edged 
with brownish, tinged with reddish ; wings white ; expanse of wings nearly 3£ inches. 
