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 orauge-colored tubercles, 

 begins a white dorsal line, edged with green, which also extends to the tip of the 

 twelfth segment. The lateral lines ou 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. Ou 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 orange. 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 au obscure yellowish band. The first line straight, the second 

 oblique, with two large teeth pointing inward, ou the submedian interspace, and ou 

 the fourth subcostal veinlet. A submargiual line twice bent, obtusely angulated in 

 the second median interspace, and on the eubapical 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 6blique 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 ou the elm, according to Mr. Joseph 

 Bridgham, of Providence, who kindly presented me with the excellent 

 colored sketch ou 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 {(Enothera 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 promineut 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 biack. lu 

 some instances these spots are disconnected, and the space between theblack cresceuta 

 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. 



