L26 THK CANADIAN ENTOMOLOGIST. 



bluish black. 7vith a minute ochreoas spot on the extreme dorsal margin about 

 the middle. Viewed from the direction of the head there is a faint silvery 

 streak visible opposite the ochreous spot, but it is not visible with the 

 light in any other direction usually, although in one specimen it is visible 

 on one iving in any light, but is not on the other. Ciliae pale yellow, with 

 a dark brown hinder marginal line near the base. Al. ex. -h inch. Ken- 

 tucky ; Pennsylvania. 



The mine of the third species is at first crooked, with a central line of 

 frass. It is afterwards enlarged, forming an irregular blotch, which covers 

 all or nearly all of the original mine. It then resembles the mine of N. 

 platancllct) but is less rounded and the outline is more irregular. I have 

 not succeeded in breeding this species, but have no doubt that the species 

 described below as N. maximella is the maker of the mine. 



X. maximella. N. sp. 



Head and eye-caps yellowish white : palpi a little paler ; antennae dark 

 fuscous above, whitish beneath ; thorax and anterior wings bluish black, 

 with a silvery white fascia about the middle, concave towards the base, and 

 sometimes faintly interrupted in the middle. Apical ciliae whitish, with a 

 dark brown hinder marginal line near the base. Al. ex. }( inch. Ken- 

 tucky. 



Taken in large numbers resting on the trunk and leaves of Sycamore 

 trees (P. occidentalism seldom elsewhere, and I believe it to be the miner 

 No. 3. 



N. serotinceella. N. sp. 



Tuft rufous ; face reddish yellow ; palpi silvery gray ; eye-caps and 

 hinder portion of the vertex very pale or whitish golden ; thorax and 

 primaries blackish, with purple and bronzy reflections, the primaries 

 crossed by two silver fasciae, both of which are straight, the first being 

 rather the widest, placed just before the middle, the second just before 

 the beginning of the ciliae ; ciliae of the general hue, but in some lights 

 silvery gray, the dorsal ciliae rather pale. Al. ex. fa inch. Kentucky. 



The larva makes a very pretty mine on the leaves of the Wild Cherry 

 (Primus scroti ;ia ). The mine is narrow, linear, very much convoluted 

 at first, filled with frass, which afterwards becomes a central line only in 

 the mine, which is gradually a little widened ; the mine is whitish and 

 the frass black, but to the naked eye the mine appears brownish red, and 



