THE CANADIAN ENTOMOLOGIST. 149 



moves about within the hollow gall. Its mouth is large and set well up 

 in the face, and the upper lip has a beak-like curve. 



On the loth of July, 1891, I witnessed the cleaning out of a chrysalis 

 case of G. gallx-diplopappi by a grub of this species. The creature, 

 having finished its meal, left the case and immediately proceeded to spin 

 its cocoon. When completed, this cocoon was long and sack-like, but 

 compact in texture. It was white at first, but it darkened with age. 

 The perfect insect burst from it on the lolh of June of the following year. 



On another occasion, on opening a gall, I found a grub of the 

 species just finishing a dessert of the very case of its victim. In this 

 instance the grub, in a short time, voided the indigestible parts of its 

 meal in dark pellets, and then commenced to spin. 



I opened a cocoon of the parasite on the 25th of March last, with a 

 view to describing the pupa. I found that the pupal change had not 

 taken place. Preparations for it, however, seemed to be commencing. 

 The head was becoming rounded ; the mouth was sealed up, but its out- 

 line was still apparent ; the pseudopodia were disappearing ; the body was 

 becoming attenuated. 



I put the creature back into its ruptured envelope, but it was not 

 content to remain in it — it wriggled out. so I placed it in a clean paper 

 box, and, I am glad to say, its changes went on as if nothing unusual had 

 happened. 



By the ist of April the head, thorax and abdomen of the insect 

 could be traced under the skin. The first two had become yellowish, 

 and the eyes, which I had first noticed as faint streaks, now showed as 

 brownish oblong patches. 



In the night of April 1-2 the pupal change took place. In the 

 morning I found the shrivelled larva skin still clinging to the extremity 

 of the body. The main parts were now of distinct form, and the 

 antennai and limbs appeared in proper shape, extended beneath the 

 insect, and beautifully white and pellucid. The only colouring was in 

 the eyes, which were large and brown. 



On April 6th I found that the ocelli were distinctly seen, and that 

 the upper part of the abdomen was beginning to darken. 



On the 8th the thorax began to turn black. On this date I made a 

 drawing of the pupa. The insect seemed to object to the strong light in 

 which I had placed it, I noticed twitchings of the legs and antennae, 

 I therefore put it back in its box as soon as possible. 



On the 9th I found that the head and thorax were quite black, while 

 the legs and antennae were still pellucid. 



