644 Mr. H. T. Stainton on the 



triangular space included between these two fascige is deep orange, 

 margined with black ; above the anal angle is a short silvery 

 streak, and another is in the extreme apex of the blackish cilia. 

 Posterior wings blackish, with paler cilia." 



I here indicated the two essential characters, though then little 

 aware of their importance — the black base of the wing and the in- 

 terrupted apical streak, forming two short streaks. 



With reference to its localities and habits, I observed: — 



"It has occurred in some plenty in several localities near 

 London in July ; it was reputed to frequent a willow tree at 

 Hackney, probably because some hops grew in the vicinity. The 

 larvae of none of the genus are known, but the larva of DrurelUi 

 is pretty strongly suspected ; it mines in the leaves of the hop in 

 September, when full fed quitting the leaf and forming a fine 

 white cocoon, within which the larva remains unchanged during 

 the winter ; hence the perfect insect is difficult to rear. Mr. 

 Douglas had collected a number of these larvae in the autumn of 

 1852, but many escaped from his breeding-cage and the remainder 

 died; in the following July he found a specimen of the perfect 

 insect on the window of the room where he had kept his larvae. 

 Subsequently Mr. Wing discovered some of the perfect insect (not 

 previously known to occur in this locality) by beating the hop 

 plant, the leaves of which had furnished the mining larvae the 

 previous autumn. I therefore conclude that these miners are the 

 larvae o^ Drurella, but that they are so is not yet proved." 



The description I gave at the same time of Lientgiella is defec- 

 tive in one or two points ; this it is important to notice, lest these 

 defects should lead to the suspicion that my insect was distinct 

 from the Lienigiella of Zeller. I perceive that I have omitted 

 to mention the very short and slender white streak which lies 

 below the fold beneath the apex of the streak which proceeds 

 from the middle of the base, and I have omitted to notice the pale 

 orange colour of the medial fascia, which is distinctly different 

 from the ground colour of the wing ; the definition, moreover, of 

 its markings, as " five small leaden silvery spots placed almost in 

 a circle," is a definition that does not satisfy me now. 



Herrich-Schaffer, in his " Schmetterllnge von Europa," figures 

 two species — 998, Scribdiella, and 999, Dmryella ; the latter is 

 clearly shown with the base of the anterior wings black and the 

 apical streak interrupted. 



In the text he says, v. p. 284 — 



" Anterior wings blackish, with a medial orange fascia, which 



