140 GRAPE-VINE. LEAVES GARTERED PLUME. LARVA. 



The larva when full grown measures about half an inch in length. It is al- 

 most cylindrical, sixteen-footed, of a very pale green color, divided into fourteen 

 segments by rather deep wide transverse constrictions. It has two rows of 

 elevated white spots along the back, and one along each side, each segment 

 having one spot in each row, or four spots in all, and between the spots is a 

 smaller white elevated dot, and another similar dot below thr loAver spots. 

 From each of these elevated spots and dots white bristles of difFerent lengths 

 stand out in all directions. 



Two of these worms which I enclosed in a breeding cage had 

 changed to pupee on the 25th of June, one suspending itself from 

 the gauze top of the cage, and hanging obliquely downwards, the 

 other attaching itself to the glass side of the cage, having first 

 spun several short threads here and there upon the surface of the 

 glass as if to ascertain whether they Avould adhere to it, and then 

 making a small patch of numerous threads, into which to insert 

 the minute hooks at its tail, whereby to suspend itself. The 

 relics of its larva skin, forming a little lump of fine hairs, remained 

 adhering to the glass, downwards and to one side of the spot 

 where the pupa was attached, being as far oif as the length of the 

 insect enabled it to reach. After releasing itself from this skin 

 the pupa had turned to the opposite side, and thus remained 

 hanging stiffly downwards and outwards from the surface of the 

 glass, resembling the dead fragment of a little scraggy twig. It 

 is of a slender conical form obliquely truncated at the head, and 

 has two long compressed horns placed side by side and jutting 

 upwards from the middle of its back. Numerous smaller pro- 

 jecting points and ridges diversify its surface, a particular de- 

 scription of which would occupy a page or two. I therefore limit 

 myself to a recital merely of some of its most prominent marks. 



The chrysalis is about 0.35 long and 0.08 in diameter. About the mouth 

 and head are divers raised lines and projecting angular points. The obliquely 

 truncated face is convex or gibbous in the middle, and here commence two 

 elevated carina or sharp edged ridges which extend backwards nearly parallel 

 with each other to the middle of the back, where they shoot upwards into the 

 compressed horns already spoken of. Their length is equal to half the di- 

 ameter of the body. Viewed laterally their outline is egg-shaped, with the 

 edges irregularly toothed and the apex drawn out into a long sharp thorn- 

 like point. Forward of these horns the raised lines are more elevated in the 

 middle of each segment, where they present two small tooth-like spines, the 

 anterior one larger, and also two short diverging white bristles which are club 

 shaped or enlarged towards their tips. And on the five abdominal segments next 

 back of the horns and in a line with them is a row of spines, one on each side of 

 each segment near its middle, which spines are inclined forward, and each has a 



