THE CANADIAN ENTOMOLOGIST. 147 



notice being taken by the grub." In another letter a farther observation is 

 made going to show that the relations of larva and grub are not 

 unfriendly. 



Sept. 4th : " Have you noticed the ape's face which the chrysaUs 

 shows, when looked at upside down ?" 



At the second moult, the body was higher, and was broader in middle, 

 and was more the shape of maturity, the hairs more abundant ; the feet 

 and legs not retractile ; the head more covered by next segment than 

 before, but very little, and that only along forehead. 



The growth of these larvae is remarkable for rapidity, scarcely more 

 than two days between moults, and there are but three moults in all. 

 Such haste to reach chrysalis is what might be expected when one con- 

 siders the nature of the food, its precariousness, and the activity of the 

 enemies the larva is constantly exposed to. There is no long interval 

 preceding a moult when the larva lies helpless, and this is particularly so 

 at the third moult, when the larva is fully exposed to view. I watched 

 several most carefully when I anticipated the third moult, but never was 

 able to see it, or to know precisely when it occurred. I could see that a 

 moult must have taken place by the fresh and differently colored skin of 

 body, and the enlarged head. Miss Morton at first experienced the same 

 difficulty, and wrote 30th Aug. : " Thursday morning the larvae had 

 devoured every aphis in the box, and I remembered seeing some red 

 aphides on. wild cherry near the house. These I put in until I could go 

 to the swamp, a mile away. When I returned, 3 hours after, three of the 

 five larvae had moulted, after eating nearly the whole of the two square 

 inches of aphides, though there was no appearance of a moult when I 

 went away. These three had changed from the whitish and gray to the 

 mature orange (on dorsum) and pupated Sunday morning (i. e., 3 days 

 after 3rd moult.)" But Sept. 21st : ' "Since writing on the moults, I have 

 seen the three, and have now eight larvae in all stages from first to last." 

 Mrs. Peart also detected the third moult, and sent me four tables of the 

 length of the several stages of as many larvae. 



At third moult, the larva is .44 inch long,and .14 inch broad in middle 

 the sides tapering about equally either way ; the dorsum is flattened broadly, 

 and is highest at 6 ; the under side flattened ; the feet are not retractile 

 and the pro-legs cannot properly be called so ; the head is covered more 

 than before. As the stage proceeds, the head is more and more concealed 

 by the growth of segment 2, but there is no extensile neck as in Lye. 



