8382 



Insects. 



This species may be recognised by the tips of the cilia of the ante- 

 rior wings being grayer, not so white, and by the paler legs ; the hinder 

 tarsi are yellowish white, and only pale gray at the first joint. The 

 fascia has the same direction as in N. angulifasciella, but is very 

 narrow and less conspicuous. The frontal tuft in the male is 

 generally pale luteous or ochreous, in the female is more or less of a 

 brownish fuscous, especially at the hinder part, yet some males occur 

 with brownish and females with yellowish frontal tuft. The antennae 

 are long, yellowish gray, the eye-caps large, pure white ; the colour of 

 the slightly dilated anterior wings is more black-gray than black. The 

 cilial line is more undefined than in the other species. 



The larva is yellowish green, with the head brownish, and it feeds 

 in the leaves of Fragaria vesca and Potentilla fragaria. 



The mine is long and tortuous, with a slender excremental line. I 

 have only noticed the autumnal brood ; according to fVey there is 

 also a summer brood. 



In Switzerland, and at Brunswick, Wolfenbuttel, &c. 



Group XII. 



30. N. OBLIQUELLA. 



Capillis ochraceis, antennarum conchula parva flavida ; alis anteri- 

 oribus fuscis, post medium grosse squamatis, nigris, fascia media 

 obliqua in plica fracta albida, vix sericeo-nitente ; ciliis post 

 lineam nigram albis. Exp. al. 



This species agrees with those of the preceding section in the fascia 

 being quite similarly placed, of similar form, but differs in the colour 

 of the fascia and its want of metallic lustre ; in N. tityrella and its 

 allies the fascia is placed beyond the middle of the wing and the cilia 

 have no divisional line ; in the group of N. Salicis the anterior wings 

 are also more coarsely scaled before the fascia, which is placed more 

 posteriorly. The frontal tuft is ochreous; the cervical tuft and eye- 

 caps are rather paler ; the legs are pale blackish gray. The anterior 

 wings are narrow, of uniform width, rather finely scaled before the 

 fascia, of a gray-brown ; beyond the fascia they are thickly clothed 

 with coarse black scales. The fascia is narrow, and runs from a little 

 before the middle of the costa obliquely to the fold, where it unites 

 with a small spot, which lying on the inner margin beyond the middle 

 has also an oblique direction towards the hind margin, and with it it 

 forms nearly a right angle ; sometimes instead of this it expands 

 below the fold, forming a triangle. Its colour is whitish, very slightly 



