LEPIDOPTERA. 345 



rather prominent, the cross-lines between them being deep. 

 They are of a green color, with two longitudinal white lines 

 along the back, a dark green line in the middle between them, 

 and an indistinct whitish 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 disturbed 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 sus- 

 pend themselves by silken threads like the Geometers ; but they' 

 are very active, creep fast, and soon get upon the leaves again af- 

 ter leaping 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 August, 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 Hwnuli, 

 the hop-vine Hypena, upon the supposition that it is' distinct 

 from the Hypena rostralis, 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 forepart of the head, in the manner of a snout. The 

 antennae in both sexes are naked, and bristle-formed. The wings 

 vary in color, being sometimes dusky or blackish brown, and 

 sometimes 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 black tufts, 

 44 



