THE CANADIAN ENTOMOLOGIST. 9 
belonging to Zeller’s section with eight veinlets. It mines the leaves of 
the ‘Locust (Robinia pseudacacia and À. hispida), and of various species of 
Desmodium. (Dr. Clemens was acquainted with the larva mining Desmo- 
dium, but supposed it to be the larva of his P. despedez@foliella. 1 have, 
however, bred robiniella from it). Like many other larve of Gracilaria, 
it frequently leaves an old mine to construct a new one. The mine is 
pale yellowish, is usually on the midrib, with lateral branches running 
out from it. I am not acquainted with any Gracilaria which makes a 
similar mine, but scarcely any two species make mines alike. When the 
larva is disturbed, it conceals itself on the midrib. Gracilaria pavoniella, 
according to Stainton, (Wat. His. Tin., vol. 8, p. £86), has the same habit. 
It pupates in a small z/44s on some abject on the ground. 
The imago is dark golden-brown, almost black, with ¢hree oblique 
silvery costal streaks, and the same number of dorsal ones opposite the spaces 
between the costal ones ; and a #ansverse narrow silvery line beginning, 
on the costa, within the ciliz, near the tip. Head white. 
P. lespedezefoliella, which must also be a Gracillaria, seems, from Dr. 
Clemens’ description, to differ from this species mainly in having only wo 
costal streaks, and in having all of the streaks situated a little differently. 
Alar ex. less than 74 inch. G. robiniella occurs at Green Bay, Wisconsin. 
Pennsylvania. Kentucky. New Orleans. 
Dr. Clemens says that he always found the mines untenanted when 
the leaves were mined by Li¢hocolletis robiniella. Such has not been the 
result of my observations. On the contrary, I have found the larve in 
the mines of both species, and also those of Z. ornatella in their mines, 
at all times from the middle of July until November, many, of all these 
species being still in the larval state when the leaves fall. And nothing 
is more common than to find two, and, very frequently, three of these 
different species mining the same leaflet at the same time; and, late in 
the season, Depressaria pseudacaciella, and an unknown larva, may be 
found as intruders in the same mines. And as heretofore stated, I 
find, during the latter part of summer and in the fall, this species and 
the two species of Zz¢hocolletis in all their stages—larva, pupa, and imago 
—at the same time. 
Gracillaria eupatoriella. LN. sp. 
This species mines the leaves of Zwpatorium ageratoides on the under 
side, the lower cuticle becoming wrinkled. The larvæ were found in the 
mines in July. They frequently leave old mines and make new ones. 
