Rev. Mr, KirBy'j Hi/lory cfTipula Tritici, &c. 231 



Naturalifts, and, in conjunction with your own obfervations, and 

 the information you will procure from the ingenious and accurate 

 Mr. Markwick and other friends, be not unworthy of the notice of 

 the public. 



In the year 179.5, when you firft began to investigate this fubject, 

 I obferved very few of the larvae in queftion; and confidering the 

 Tbrips pbyfapus as occafioning the greateft quantity of injury, my 

 chief attention was directed to that infect j but in the prefent feafon 

 I have more particularly attended to the former. Wherever 1 have 

 taken my walks, I have made it my bufinefs to examine thofe fields 

 of wheat through which I have palled, and I have fcarcely palled 

 through any in which fome florets, of every ear that I examined, 

 were not inhabited by thefe larvae ; and this has often been at fome 

 diftance from hence. But although 1 have found the larva: fo 

 abundant, the pupa has very feldom occurred to me; fo that for 

 fifty of the former, I think. I may fay without exaggeration I have 

 fcarcely found one of the latter. As many as I collected, I put into 

 a tumbler covered with gauze, in which they remained fome time 

 without any imago making its appearance. At length I obferved 

 the exuvia of one lie at the bottom of the glafs ; but the imago, I 

 fuppofe, had made its efcape through the gauze, as I could not find 

 it. Upon this I put the remaining ones into a fmall phial, the 

 mouth of which I fecured with gauze four times doubled, and tied 

 clofe. About three weeks fince, examining this one day, I obferved 

 a fmall fly walking up its fides : I opened it carefully, and fecured my 

 little animal, which upon examination appeared to be a very minute 

 Tipu/a, nearly of the colour of the pupa. It is not defcribed. in 

 Gmelin's edition of the Syjicma Nafortr, nor by any author that I 

 have accefs to; therefore I ihall defcribe it, and the little Icbneumf u 

 •which dtnofits its egg in its larva. 



T1PULA. 



