NEW BRITISH SPECIES IN 1857. 



apical portion violet ; cilia grey. Posterior wings pale grey, 

 with pale grey cilia. 



Distinguished at a glance from the smaller Alnetella, by 

 the purple brown, not golden brown, basal portion of the 

 anterior wings, and by the fascia hardly shining at all, a 

 great contrast from the extreme brilliancy of the fascia in 

 Alnetella. In Glutinosce, the fascia is nearly as as 



in Micr other iella. 



Mr. Wilkinson of Scarborough has bred this species 

 from alder leaves, collected there last autumn ; the mine and 

 the larva have not yet been distinguished from those of 

 Nepticula Alnetella. 



Nepticula arcuata, Frey. 



Alia anticis atris, fascia arcuata argentea in medio; 



capillis ferriigineis. 



Exp. al. 2.J lin. 



Head ferruginous. Antennae fuscous. Abdomen and 

 legs grey. Anterior wings black, with a rather slender, 

 central, silvery-white fascia, which on the fold is curved a 

 little inwards ; the fascia is antenuated in the middle ; cilia 

 whitish. Posterior wings pale grey, with pale grey cilia. 



Closely allied to Angulifasciella and Atricollis; the 

 former is however a larger, blacker insect, with a more 

 brilliant fascia ; Atricollis is the same size as Arcuata, but 

 is blacker, and the fascia is broader and more brilliant. 



Mr. Boyd has succeeded in breeding this insect, from the 

 larvae in the leaves of Potentilla fragariastrum. 



Pterophorus Loewii, Zeller. 

 Exp. 9 lin. 



Nearly allied to Bipunctidactylus and Plagiodactylus, 

 but recognized at a glance by the costal cilia from the middle 

 1858 h 



