European Species of the Genus Cosmopteryx. 647 



narrower than the black basal portion of the wing, begins on the 

 costa with its full breadth and goes obliquely across, generally 

 terminating just before the inner margin. It appears to be divided 

 by the fold of the wing, without, however, really being interrupted. 

 Then the black ground colour again reappears for a considerable 

 breadth, till, about the beginning of the second half of the wing, we 

 perceive the characteristic transverse blotch, with a golden fascia 

 on each side. 



" The anterior golden fascia has a scarcely perceptible oblique 

 direction, and is distinctly margined posteriorly with black ; the 

 large, broad, medial spot is only orange-coloured in flown speci- 

 raensj, in fine bred specimens it is decidedly red, of a deep cinnabar 

 colour ; since the golden fascia on its posterior margin is much less 

 obliquely placed than in the allied species, it follows that the red 

 spot forms a quadrangle of which the costal side is somewhat 

 longer than the dorsal side, but not strikingly so ; the posterior 

 golden fascia is obliquely placed (in many specimens scarcely de- 

 viating from the perpendicular), and is uninterrupted, internally 

 margined with black ; it generally terminates on the costa with 

 some whitish scales. The apical portion of the wing is again deep 

 black, with blackish-grey cilia, and bears the marking character- 

 istic of our species. In the apex of the wing W'e see, as in the 

 allied species, a white streak, but in Schmidiella this is immediately 

 continued as a long, not curved, line, which terminates obliquely 

 beyond the anal angle ; it shines very brilliantly blueish, or violet- 

 silvery, and adds not a little to the beauty of this charming insect. 

 The posterior wings are blackish-grey, with very long cilia. 



" The underside of the anterior wings is of a deep black-grey, 

 the whitish apical streak, and the whitish commencement of the 

 golden fascia which borders posteriorly the red spot, are alone 

 represented. 



" The larva of this species lives with us in the second half of 

 August and throughout September, mining the leaves of Vicia 

 Sepium. The mine is flat, broad, undersided, occupying the whole 

 leaf, and the parenchyma becomes entirely devoured ; hence it 

 easily catches the eye, but it is much more difficult to perceive 

 the larva, since it usually rests over the midrib of the leaf. Its 

 haunts are open places in woods, or the margins of woods. Here 

 and there it occurs very abundantly, and sometimes a single plant 

 harbours an entire colony. 



" The larva is of the size of a large LUhocolletis larva. It is 

 slender, with the segments deeply raised, posteriorly pointed, and 

 with the head small. When young it is yellowish-green, with a 



