( xxxi ) 



before their actual deposit could not be considered sufficient grounds for 

 calling the egg-like bodies pupoe, or describing tlie winged form as pupi- 

 ferous or viviparous. 



The only winged forms with which I have had experience are those 

 bred in bottles, under circumstances which I have already described, and 

 from which I obtained altogether only nine eggs actually deposited by 

 winged individuals, after being removed from the bottle and placed 

 separately in confinement. Out of these nine eggs I can only report the 

 result of three, the remainder having met with an accident of some form or 

 another, with the exception of two, which 1 mounted. 



On September 1st a winged form was removed from the bottle to a 

 separate glass cell, and the next day had deposited an egg. Tliis egg 

 presented no change until the 12th of the month, when it seemed to have 

 modified its shape, and had assumed a darli colour. On the 15th it had 

 still further changed its form, a sort of knot or protuberance appearing at 

 one end ; and on the 19th the embryo had burst through its shell, which 

 was adhering to the posterior end of the embryo. On the 22ud the eyes 

 could be seen, and what appeared to me rudimentary legs; but it appeared 

 still to be surrounded with a thin investment. I continued to observe it 

 till October 2ud (one month), but it did not appear to make further 

 progress. This individual, together with the egg-shell, is shown on slide 

 No. 5, although, in the course of preparation, the shell slipped away from 

 the body of the young insect to which it was before adhering. 



Again, on the 4th September, I placed a winged individual in similar 

 circumstances, at 9.30 a.m., and at 10 p.m. the same day 1 found an egg 

 in the cell, and the winged insect apparently just recovering from having 

 laid a second, as another was found under her wings, and she was struggling 

 very much, as if in pain. The next day 1 found her dead, and, on exami- 

 nation under the microscope, observed another egg in her abdomen, which 

 would have made three eggs laid by the same individual, if she had 

 lived. These two eggs, laid on September 4th, I have still under observa- 

 tion. They have very much altered in appearance and shape, and 

 I think are still progressing, but very slowly. They gradually became 

 darker in colour, and swelled out at the sides, the polar ends becoming 

 flattened. They now both show the form of the embryo, but no eyes at 

 present ; nor have I noticed yet any signs of bursting through the shell. 

 Perhaps the very fact of this slow development precludes tiiem from being 

 considered as anything but actual eggs. 



I have referred above to an individual apparently being in pain, after 

 having kid an egg; and in another instance 1 noticed one (in an open glass 

 cell) violently rearing up and down, using its cauda and posterior legs as 

 fulcra with which to raise itself up and down, after the manner of a horse 

 rearing. Afier about ten minutes of these violent contortions it suddenly 



