THE CANADIAN ENTOMOLOGIST. 43 



on the 1 2th segment, which is much wider. These are all more or less 

 dotted with round black dots, from each one of which arises a single 

 short brown hair. There are also crossing each segment six black lines, 

 placed nearly at equal distances along each side, but with a wider space 

 in the middle, where the orange band occurs. The twelfth segment is 

 much raised, and the terminal one suddenly sloped. The under side is 

 very like the upper, and also marked with orange and black ; feet and 

 prolegs orange, spotted with black. 



The larvae feed on Virginia Creeper (Ampelopsis quinquefolia) as 

 well as on the Grape-vine, and Mr. Bowles, of Montreal, has found them 

 feeding on the Hop. 



When full grown, they descend to seek some secure retreat in which 

 to pass the chrysalis, or inactive stage of their existence. They are fond 

 of boring into old pieces of wood, and in the chambers thus formed they 

 find secure lodgment ; they will also bore into corn-cobs. When rearing 

 them we have supplied pieces of cork for this purpose, and have had as 

 many as twenty-one chrysalids enclosed within two small bungs about i ^ 

 inches in diameter, and one inch thick. The excavation is but little 

 larger than the chrysalis which is to rest in it ; it is not lined with silk, but 

 is made moderately smooth and is furnished with a cap or cover composed 

 of minute fragments of cork, formed into a sort of membrane by means 

 of a glutinous secretion mixed with threads of silk. When nicely finished 

 the surface of this cover is slightly glossy, the glossiness extending a little 

 beyond the actual orifice, indicating that the glutinous matter has been of 

 a thin consistence and has spread a little during its application. When 

 Fig '" B M -r the lid is lifted the head of the chrysalis is 



usually found quite close to it. 



The chrysalis is about seven-tenths of an 

 inch long, of a nearly uniform dark brown 

 color, and roughened with small blackish 

 points or granulations. 



This insect is subject to the attacks of a 

 parasite, a two-winged fly— a Tachina — probably the species known as the 

 red-tailed Tachina fly, Exorista laeawia, see fig. 8 (after Riley.) It is 

 not much unlike the common house fly in appearance, is about a quarter 

 of an inch long, with a white face, large reddish eyes, a dark hairy body 

 >vith four, more or less distinct dark lines down the thorax, and patches of 

 a greyish shade along the sides of the abdomen. The parent fly deposits 



