90 Cincmnati Society of Natural History. 



Fore wings almost black, lustrous, with a very faint dark 

 blue tinge in the basal portion. Just beyond the middle of 

 the wing is a rather broad straight silvery or very pale golden 

 fascia. Cilia of the general hue, scarcely paler tipped op- 

 posite the apex. Hind wings dark gray. 



Fore pair of legs gray, middle and hind pair silvery, hind 

 tibiae and tarsi black above. Abdomen black, silvery gray 

 beneath. 



Expanse : 4.5 mm. 



The conspicuous silvery fascia and the almost entire ab- 

 sence of pale tips of the apical cilia, probably are the most 

 distinguishing features of the species. Of the described species 

 it comes nearest to A^. fuscotibiella Clem. 



Nepticula tiliella, n. sp. 



Palpi whitish. Tuft reddish ocherous, whitish behind. 

 Antennae black, eye-caps shining white. Thorax black. 



Fore wings almost jet black, with a very faint purple 

 luster. There is a very shining pure white fascia, a little 

 convex outwardly, at the middle of the wing. Cilia gray on 

 the dorsum, shining white from the tornus to the costa. Hind 

 wings and cilia gray. 



Legs silvery gray, tinged with ocher, hind tibiae and tarsi 

 blackish above. Abdomen blackish above, silvery gray be- 

 neath. 



Expanse: 3.5 mm. 



Three specimens bred from serpentine mines on the upper 

 side of leaves of basswood, Tilia americana L., Clermont Co., O. 

 The mines in some portions of their course show a tendency 

 toward a spiral form, with either the early or 

 the later portion inside. Another striking 

 feature is the frequency of angular, almost 

 right-angled turns, in the mine. The frass at 

 the beginning is deposited in a line through the 

 middle, later it is dispersed in separate grains 

 Mine of V. ////w/a. or zigzag lines throughout the entire breadth. 



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