DIPTERA. 159 



long. The larva? were sub-cylindrical, tapering at each 

 extremity, and appeared to feed upon the internal succulent 

 walls of their curious abode. My friend Mr. Stainton ob- 

 served the same fact on Wray Common, near Reigate, Sept. 

 1856, and obligingly sent me some of the umbels of the Dau- 

 cus so attacked for examination. 



XIII. In the vicinity of Dover I have observed the hedge 

 bedstraw, Galium mollugo, with some of its seed vessels 

 very much inflated, and assuming a rough, pear-like form. 

 This enlarged seed vessel, if opened at the proper season, 

 August, will be found to contain a small yellow Dipterous 

 larva, one-tenth of an inch long, ovate elongate, more at- 

 tenuated towards the head, slightly flattened on the upper 

 and under surface. In old and empty inflated seed vessels, 

 which had evidently been the abodes of larvae, I found 

 a small round aperture near the footstalk, through which the 

 insect had escaped from its prison. 



