LEPIDOPTERA. 373 



two longitudinal white lines along the back, a dark green line 

 in the middle between them, and an indistinct wliitish line on 

 each side of the body. The head is green, and very regularly 

 spotted with minute black dots, from each of which arises a 

 very short hair. There are similar dots and hairs arranged in 

 two transverse rows on each of the rings. When disturl)ed 

 they bend their bodies suddenly and with a jerk, first on one 

 side and then on the other, each time leaping to a considerable 

 distance, so that it is difficult to catch or hold them. They 

 make no webs on the leaves, and do not suspend themselves 

 by silken threads like the Geometers ; but they are very ac- 

 tive, creep fast, and soon get upon the leaves again after leap- 

 ing off. When fully grown they are about eight tenths of an 

 inch long. They then form a thin, imperfect, silky cocoon 

 within a folded leaf, or in some crevice or sheltered spot, and 

 are changed to brownish chrysalids, which present nothing 

 remarkable in their appearance. Three weeks afterwards the 

 moths come forth from these cocoons. There are two broods 

 of these insects in the course of the summer. The caterpillars 

 of the first brood appear in May and June, and are transformed 

 to moths towards the end of June, and during the early part 

 of July. Those of the second brood appear in July and Au- 

 gust, and are changed to moths in September. The insects 

 of the second brood are much the most numerous usually, and 

 do much more damage to the hop-vine than the others. The 

 moth has been named Hypena HuvmU, the hop-vine Hypena, 

 upon the supposition that it is distinct from the Hypena ros- 

 tralis, or hop-vine snout-moth of Europe. These moths are 

 readily known by their long, wide, and flattened feelers, which 

 are held close together, and project horizontally from the fore 

 part of the head, in the manner of a snout. The antennae in 

 both sexes are naked, and bristle-formed. The ^vings vary in 

 color, being sometimes dusky or blackish brown, and some- 

 times of a much lighter rusty brown color. The fore wings 

 are marbled with gray beyond the middle, and have a distinct 

 oblique gray spot on the tip ; they are crossed by two wavy 

 blackish lines, one near the middle, and the other near the 

 outer hind margin ; these lines are formed by little elevated 



