Canadian Butterflies. 



347 



There are two very narrow bauds of yellow along the back, di- 

 vided by a line of black. On the lower part of each side there is 

 also a stripe of a yellow colour, but not so conspicuous as those 

 upon the back, on account of its position being nearly on the un- 

 derside of the body. On each of the 2d, 3d, and 4th segments of 

 the body there are four spines ; 5th, 6th, 7th, 8th, 9th, 10th, 11th* 

 seven spines; 12th, four spines; 13th, two spines. All the speci- 

 mens I have observed are more or less speckled with minute spots 

 of yellow, and sometimes these are so numerous, that the cater- 

 pillar has a yellowish instead of a brown or blackish colour. 



The Chrysalis is about three-fourths of an inch in length, and 

 of a light or dark-grey or ash colour, with three rows of golden 

 tubercles on the dorsal side. There are nine of these in each of 

 the outer rows, and six in the central. The latter are very small. 

 Two of those of the outer rows, one large and a very small one 

 beside it, are situated in the constriction of the back. On the sides 

 of the head are two or three small projections. 



Chrysalis of C. cardui. Fig. 1, View of the Dorsal side. 2, Ventral 

 side. 3, Left side. 4, Right side. 



Cynthia cdrdui was very abundant in the city of Montreal and 

 around the base of the mountain, during September aud the be- 

 ginning of the present month of October. In the small common 



