10 



TODACCO-WOnU. VABIES GBEATI.Y IM COI.OB. THE PBPA DESCBIUED. 



on its tii)pGr and another on its lower side, tlietwo stripes uniting tojg'ethet 

 forward of it; and at tlie anterior end a faint white streak is commonly 

 visible for a short distance forward of the lower end of the first oblique 

 stripe. At the hind end of the bodj' is a flattened triangular space which 

 is margined with white upon each side. The head is green, sometimes 

 with a vertical black streak upon each side. The anterior legs arc dusky 

 towards their tips, and on their inner sides are a few small black bristles. 

 The soles of the pro-legs are black, as is also the curved horn at the end of 

 the back. 



This larva is liable to vary in its colors to a surprising extent. Many 

 persons from noticing in their gardens worms wjiicii arc so totally dissimi- 

 lar in their colors confidently suppose there are two or three different spe- 

 cies of them infesting their tomatoes. And the same varieties occur upon 

 the potato, and probably also upon tobacco. Its most common color is 

 leek green. From tliis it varies to lighter yellowish green, and on the 

 other hand to various shades of darker brownish and blackisli green. In 

 other instances the green color wholly vanishes, and the worm is pale or deep 

 amber brown, blackish brown, purplish black or pure black. In these 

 brown and black varieties the head sometimes retains its normal green 

 color, but is usually the same color with the body. The dots upon the 

 skin and the oblique stripes along the sides are very often light yellow 

 instead of wliite; and where the ground color of the worm is dark brown 

 or black, these markings are always yellow, or sometimes pale pink red. 

 The breathing pores arc black, but sometimes dark red or dull yellow, 

 and are surrounded by a ring of white or pale blue, which is usually 

 inclosed in a second ring which is sometimes brown, sometimes black. 

 The curved tail-like horn, so far as my observation goes, is the only part 

 which is constant in its color, this being alwaj's black. 

 • Tiie Pui'A or chrysalis is of an oval form, its opposite sides nearly 

 parallel through most of its length, and tapering at each end. It is four 

 times as long as thick, its length being 

 two to two and a half inches. It is of 

 a chestnut brown color, paler in some 

 places and blackish in others. The 

 anterior end is irregularly narrowed and 

 Tobacco-worm Pupa. .^^ jjg ^^^^^ jj, p,.„i„|igy(i j„to a remarka- 



bly long cylindrical tongue-case the thickness of a coarse knitting-needle, 

 which projects downward and is curved backward at a distance of nearly 

 a fourth of an inch from the surface of the breast, becoming straight 

 through the last half of its length and reaching half the length of the 

 body. It is thickened and bluntly rounded at its end, which slightly 

 touches the surface of the body and is firmly soldered thereto. It is 

 evenly ribbed transversely, app aring as though the enclosed tongue were 

 divided into a number of short joints like the antennae, and along its 

 outer and its inner sides are two elevated lines extending its whole 

 length. The wing-sheaths are smooth and glossy, with faint elevated 

 lines marking the veins of the inclosed wings. They are firmly soldered 



