ANNETTE F. BRAUN 
1G7 
broader as it nears the dorsum; sometimes it broadens so considerably as 
almost to reach the base of the wing. At the middle of the wing is a second 
fascia, in some specimens almost wedge-shaped, with its base resting on the 
dorsum. At the extreme apex of the wing is a silvery patch of scales of variable 
extent; in some cases it extends from the costa around the apex broadening 
toward the tornus, and occasionally it is connected along the dorsum by a few 
silvery scales with the second fascia; sometimes it is reduced to a rather large 
spot at the tornus. The color of these fasciae varies considerably, depending 
on the direction of the light, either silver, or when viewed very obliquely, a 
metallic pale blue. Cilia dark brown. Hind wings and cilia dark brown. 
Legs black, fore and middle tarsi and last segment of the hind tarsi buff. Ab- 
domen black above, sometimes silvery beneath. 
Expanse — 4 to 4.5 mm. 
Localities. — Cincinnati, Ohio; Powell County, Kentucky. 
The larva is a miner in leaves of basswood (Tilia americana). 
The egg is deposited on the upper surface of the leaf, but the 
larva upon hatching mines much closer to the lower than to the 
upper epidermis, forming at first a very narrow serpentine mine 
(Fig. 32) about 3.5 to 4 cm. in length, with a width nowhere 
greater than .5 mm. This portion of the mine is scarcely visible 
from the upper side, except for the tiny specks of leaf substance 
consumed here and there. Within the last twenty -four or thirty- 
six hours of larval life the linear mine suddenly expands into a 
blotch, 3.5 to 4 mm. in breadth. In this area, which often 
obliterates part of the early serpentine mine, the mine is semi- 
transparent and pale green. The larva spins a somewhat flat- 
tened reddish cocoon, broader at its anterior end. 
There are two or three generations a year; larvae become full 
grown toward the eml of June, in August and the latter part of 
September. 
2. Nepticula scintillans new species 
Palpi whitish. Tuft and collar black; eye-caps silvery white. Thorax 
and base of fore wing golden. Fore wing, except at the base, very dark purple 
with a silvery fascia across the middle, broadest on the dorsal margin. A sec- 
ond silvery fascia crosses the apex of the wing. At the extreme apex the cilia 
are dark brown, elsewhere silvery gray. Hind wings and cilia gray. Legs 
gray, with paler tarsi. Abdomen black, silvery beneath. 
Expanse — 3 mm. 
Locality. — Cincinnati, Ohio. 
Type material . — Holotype (writer’s collection); paratype 
(Acad. Nat. 8ci. Phila); three paratypes (writer’s collection). 
TR.\NS. AM. ENT. SOC., XLIII. 
