126 THE CANADIAN ENTOMOLOGIST. 
bluish black, si} a minute ochreous 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 wing in any light, butis not on the other.  Ciliæ pale yellow, with 
a dark brown hinder marginal line near the base. 47 ex. sz inch. Ken- 
tucky ; Pennsylvania. 
The mine of the third species is at first crooked, with a central line of 
frass. tis afterwards enlarged, forming an irregular blotch, which covers 
all or nearly ail of the original mine. It then resembles the mine of A 
platanelia, 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 M. maxime//a is the maker of the mine. 
IV. maximella, NN. sp. 
Head and eye-caps yellowish white ; palpia little paler ; antennæ 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 cilize whitish, with a 
dark brown hinder marginal line near the base. 4/ ex. ¥¢ inch. Ken- 
tucky. 
Taken in large numbers resting on the trunk and leaves of Sycamore 
trees (P. occidentalis ), se\dom elsewhere, and I believe it to be the miner 
Nios 3: 
LV. serotinæella. 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 fasciæ, 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 ; clliae of the general hue, but in some lights 
silvery gray, the dorsal ciliae rather pale. 47 ex. # inch. Kentucky. 
The larva makes a very pretty mine on the leaves of the Wild Cherry 
(Prunus serotina). 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 
