into sections ; but as I do not possess any of the typical spe- 

 cies, I am unable to throw any light upon the subject. 



My genus Peronecera, in allusion to the button-headed an- 

 tennae, comprises 



1. fuscipennis Curt. Brit. Ent. pi. 589. S . 



Which I discovered in abundance upon grass in a meadow 

 by the side of the river near Ambleside, the 21st of June, 

 where numbers of them were paired ; about the same time 

 Mr. Dale took a pair near Low Wood, on the banks of Wi- 

 nandermere. 



2. lucidipennis Curt. Guide. 



Female piceous: antennae cinereous-brown at the base, 3 ter- 

 minal joints of equal length, and a little elongated ; head and 

 thorax cinereous, 2 pale brown spots behind the eyes : thorax 

 with a broad piceous shining stripe down the middle, faintly 

 divided, and 2 ovate spots on each side ; wings rather milky- 

 white, nervures ochreous-brown, apical furcate nervure 

 elongated ; halteres pale ochreous ; legs fuscous-ochre, 

 thighs and tibiae darkest at the tips, the former pale och- 

 reous at the base: expanse 12 lines. 



The only specimen I have seen I took in Perthshire in July. 

 I may add that Mi*. H. Walker has found Nematocera nigra 

 at New Lanark, and Capt. Blomer took a pair probably of the 

 same species at Kenfig Pool, Glamorganshire, in June, which 

 is now in Mr. Dale's Cabinet. 



I should not here notice Meigen's having given M. Win- 

 them credit for my genus DolicJiopeza, had not Macquart 

 seemed to be equally ignorant of its true source: it therefore be- 

 comes necessary to state that the genus was established in this 

 work in March 1825, as will be seen by reference to the date 

 on plate 62, where DolicJiopeza sylvicola is figured ; and it will 

 not be irrelevant to add that upwards of 70 dipteroiis Genera 

 have been already illustrated in this publication. 



The Plant is EiipJiorbia helioscopia (Sun Spurge or Wart- 

 wort). 



