34 THE CANADIAN ENTOMOLOGIST. 



■whitish dorsal line, and a lateral line of the same hue about half way between 

 dorsal line and spiracles. Close to under surface is a faint double whitish 

 line enlarged to a "whitish patch at each extremity. 12th segment slightly 

 raised. 



Under surface dark dull green along the middle of body; paler with a 

 reddish tinge about each extremity. Feet dark brown; prolegs pale greenisb # 



After the second moult, July 2nd, the body became much darker in color, 

 and other striking changes were apparent. The head was much larger, and 

 the smooth polished appearance of second segment had almost disappeared. 

 The body above was dull blackish green, almost black on sides, while the 

 ■whitish lines were about the same as before. From the upper lateral line to 

 the dorsal were oblique blackish brown lines meeting on the hinder part of 

 each segment. 



On the underside, the 5th, 6th and 7th segments were black with a polished 

 surface, while on the other segments the color was dull blackish green. 



I found these creatures quite omnivorous in their appetite, they would 

 feed on almost any green thing, but I fed them chiefly on dandelion leaves 

 and lamb's quarter (Chenopodium album). Having kept them rather closely 

 shut up and crowded they were attacked soon after the second moult by 

 violent diarrhoea, which although I gave them more room and ventilation 

 soon proved fatal to them all. A fortunate circumstance enables me to com- 

 plete the history of this insect. 



On the 5th July, while visiting a friend's garden, I observed a larva 

 feeding on Scabious, which proved to be a nearly full-grown specimen of 

 Xylinoides. The following is its description: — Length 1$ inches, nearly 

 cylindrical. Head rather small, flat in front, blackish brown and shining, 

 with a few minute hairs scarcely visible without a magnifyer. 



Body above black, with a tinge of brown ; a broken bluish dorsal line. 

 On each side, close to under surface, is a stripe of brown slightly glossy, 

 dotted with minute bluish white specks appearing like a bloom on the sur- 

 face. A short whitish yellow lateral stripe on second and part of third seg- 

 ments, and the same on the outer edge of terminal prolegs. 



Under surface brown, of the same shade as the lateral stripes above, with 

 a similar bloom. Feet brown and shining; prolegs pale shining brown 

 within, marked with black without. 



This larva entered the chrysalis state about the middle of July, forming a 

 rough outer case of leaves, fastened to the cover of the box in which it was 

 confined by silken threads; within this the brown chrysalis was enclosed. 

 The imago appeared on the second of August. 



I have also found the chrysalis of this species attached to the under-side 

 of a log early in May. 



