DIPTERA. 155 



ovate, very pale dull yellow larva, having the joints of the 

 body very finely hispid. The larva changes into an oval 

 pupa, about the -J of an inch in length, of a shining black 

 colour, and having two small knob-like projections at one 

 apex, the other being slightly emarginate. I noticed the 

 working of this larva in the neighbourhood of Dover, in the 

 autumn of 1853. 



II. A Dipterous larva mines into the leaves of the common 

 daisy, BelUs perennis, producing a tortuous mine, which 

 usually runs along one side of the leaf, commencing near the 

 foot stalk, and, crossing the leaf somewhere towards the apex, 

 returns down the other side. The mine I noticed several 

 times near Whitby, Yorkshire, during the month of August, 

 but the larva escaped my notice. 



III. The common sow-thistle, Sonchus oleraceus, has its 

 leaves often mined by a Dipterous larva producing a whitish 

 intricate vermicular pattern, which is very apparent, the 

 ground colour of the leaf being bright green. The larva is 

 oblong ovate, not more than -^ inch in length, smooth, some- 

 what shining, and nearly cylindrical, the joints being very 

 obscurely marked. When removed from the mine the larva 

 was exceedingly active and restless. This mining larva ap 

 pears to be very common, as I have noticed it in various 

 places in the south of England. 



IV. A peculiar mine of a Dipterous larva I observed se- 

 veral times in the leaves of the common honeysuckle (Zo- 

 nicera Periclymenum) in the neighbourhood of Whitby, 

 Yorkshire, during the month of August. The mine consisted 

 of a series of gently curved branches, having one common 

 centre, and diverging from it in various directions. The 



