96 Cincinnati Society of Natural History. 



Nepticula rhamnella, n. sp. 



Palpi pale straw-colored, tinged with gray. Tuft reddish 

 ocherous. Antennae black narrowly ringed with pale gray, 

 eye-caps pale straw-colored. Thorax pale straw-colored, 

 patagia dark brown. 



Fore wings brown, the tips of the scales blackish. At the 

 basal third of the wing is a dull pale straw-colored fascia with 

 its edges often indented by dark scales. At two-thirds of the 

 wing length is a much broader and more conspicuous shining 

 silvery fascia. Cilia pale gray, whitish around the apex. Hind 

 wings and cilia rather pale gray. 



Fore and middle pair of legs ocherous, somewhat shaded 

 with gray, hind pair predominately gray. Abdomen brown 

 above, paler and more ocherous beneath. 



Expanse : 4.5-4.8 mm. 



Described from six specimens bred from mines on leaves 

 oi Rhamnus lanceolata Pursh., growing along the Little Miami 

 River, near Milford, O. The ^gg is deposited on the under 

 side of the leaf, and the larva upon hatching makes a short 

 contorted mine within a small area, so that its presence is in- 

 dicated from above by a blackish discolored spot on the leaf; 

 the mine then extends as a fine line nearly straight for a dis- 

 tance of about 1.5 cm.; during this time it is not visible on 

 the upper surface of the leaf. The larva then crosses to the 



upper surface, continuing the 

 linear mine for a distance of 

 about 1.5 cm. further. The 

 mine now suddenly expands 

 into a broader tract or blotch, 



has a width of from 2 to 3 mm. The length of. the broad 

 tract is about 2 cm. and in it the entire parenchyma is con- 

 sumed, leaving merely the pale green upper and lower epidermis 

 of the leaf. The frass is here deposited in a wavy line through 



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