TOB,lCCO-WOnjf. TUE WORU SB9CRtBCD. 



formed of a scries of curves on the spaces between the veins, with their 

 ends turned backward and forming angles upon the veins; aTid at the tips 

 of these wings is a black oblique line, corresponding with that upon the 

 upper side, but much more slender and simple. The hind wings are gray, 

 ■with their hind border down, and are crossed by two blackish bands, which 

 are repetitions of the two middle bands of the upper surface, but more dim, 

 more slender, and running back upon the veins in longer and sharper points. 

 The Larva grows to the thickness of one's little finger, and is somewhat 

 over three inches in length or three and a half inches when it is crawling, 

 it being then more elongated thin when at rest. Its surface is destitute 

 of hairs or bristles. It is divided into thirteen segments, those at each end 



Tobacco Worm. 



being shorter and less distinct. The surface of each segment of the body 

 is crossed transversely by impressed lines and roundly elevated intervening 

 spaces, giving them a ribbed appearance, there being eight of these eleva- 

 ted ribs to each segment. In viewing this larva the eye first of all notices 

 a formidable looking, stout, thorn-like horn, placed at the hind end of the 

 back, and projecting obliquely upward and backward, about as long as the 

 segment which is next forward of it, slightly curved, and its surface rough 

 from little projecting points. Low down upon each bide is a row of large 

 oval dots, which are the spiracles or breathing pores. The head is smalt, 

 horny and shining, of a flattened spherical form, and the mouth furnished 

 with a pair of stout jaws. It has three pairs of small tapering feet placed 

 anteriorly upon the breast, each having a sharp hook at its end, and four 

 pairs of short, thick, fleshy pro-legs along the underside of the body, with 

 two similar ones at the tip. 



The color of this worm is commonly bright green marked with white. 

 Numerous faint whitish dots are usually perceptible, at least on the fore- 

 part and underside of its body, and along each side are seven straight oblique 

 stripes, the last one of which is prolonged more or less distinctly to the 

 base of the curved horn. These stripes are usually margined along their 

 upper sides by a faint dusky cloudiness; and meeting their lower ends is a 

 longitudinal stripe, placed low down upon each segment, and forming with 

 the oblique stripe, a V-shaped mark, having its point directed forward, with 

 the breathing pore placed in the angle which is tlius formed. The hind- 

 most breathing pore also has a much shorter and more faint white stripe 



