THE CANADIAN ENTOMOLOGIST. 99 



large, and a minute dark speck for the eye spot. It was remarkably 

 active and did a great deal of rapid travelling before it came to rest, which 

 it did at last quite suddenly on the end of a twig, and then never moved 

 except to better secure its foothold. Mr. Johnston placed it in a suitable 

 position under the full light of the lamp, that we might watch its progress 

 to maturity. The first change noticed was the appearance of a bright 

 green spot near the base of the front wing, and as that enlarged the wing 

 expanded, very slowly at first, but more rapidly as it increased in size, the 

 green coloring matter flowing along between the upper and under mem- 

 brane of the wing, becoming more delicate in its shade as it spread first 

 along the front of the wing, and had reached the apex before it extended 

 through the inner half; but by the time it had touched the extremity of 

 the whole outer angle the size, form and color of the wing were complete. 

 In the meantime the hind wing had not yet doubled its original size, 

 with the part from which the tail was to come showing as a slight break 

 on an otherwise even edge ; the same routine was followed in the devel- 

 opment of the hind wing as in that of the front, and by the time the 

 broad part of the wing had attained its full size, the tail was a little more 

 than half an inch long and very much crumpled. This was the last part 

 to expand, but as the fluid passed into it, it also took size and form. The 

 whole time occupied in the operation, from first seeing it until it was com- 

 pleted, was about one hour and three quarters. - 



J. Alston Moffat. 



Dear Sir, — 



I send the following from my Entomological notes : October lo, 1881, 

 I discovered a male Pieris rapae coupling with a female Pieris protodice. 

 I placed over them a wire screen, as they were in a bunch of mustard. 

 Next morning I discovered that the male was dead. The female soon 

 deposited (in open day) her eggs on the mustard plants. They hatched 

 out and a part of them moulted the second time, but they finally all 

 perished. 



On Dec. 27, 1881, and February 15, 1882, I disturbed some boards 

 in my garden, when a female Aletia argilacea in each case flew out. They 

 were captured ; the first was perfect, the latter not quite fresh. As this 

 has been the most remarkably warm winter we ever experienced in Wis- 

 consin, it is not strange that the Aletia could survive. On Feb. 15th the 



