THE CANADIAN ENTOMOLOGIST. 



47 



of the egg is shown still more highly magnified. Mr. C. V. Riley, who 

 was the first to describe this eg^, says that at first it is of a pale yellow 

 color, but that it soon becomes gray as the enclosed larva develops. The 



Fiff. 6. 















.^-^ 



eggs are usually deposited singly near the tip of the leaf, generally on the 

 under side, although sometimes on the upper, and occasionally two or 

 even three are placed together. 



In a few days the young larva appears. As it issues from the egg it 

 measures only one-tenth of an inch long, has a large yellowish brown 

 head, and a pale yellowish brown body, the latter with darker streaks and 

 a few pale dots and warts, the warts having pale spines or bristles issuing 

 from them. The larva attains full growth in about one month from the 

 time of hatching, when it appears as shown at a, fig. 7. It is then about 

 one inch and a quarter long, with a rather large head, which is flattened 

 in front and divided by a central depressed line into two lobes, each of 



Fiir. 7. 



which is tipped with a green tubercle or short horn. The head is of a 

 pale green color, with two dull white lines down the front, and roughened 

 with a number of small green und greenish white tubercles. 



