FUP.E OF GNATS. 



287 



a, a lavva ol Lorttioa p'ut.iuomis iiiagi'.ilkd. 6, the ninn- 

 dihles and palpi, c, llie respiratory fins, d, the pupa magnified, 

 e, pupa, natural size, f, larva, uatural size. i,thereiuale fly. 

 A, the male fly. 



We possess a small aquatic pupa which is furnished 

 at the tail with four liorny hooks resembling tho 

 pricUlcs on the stem of a rose-tree, and evidently 

 intended as suspensory api)endages. It was found 

 hanging to a deal board, whicli had been immersed 

 in running water, and seems from its form to be the 

 pupa of a moth {Hijdfocampaf).* 



*■ J. R. 



