88 
THE ENTOMOLOGIST’S WEEKLY INTELLIGENCER. 
very short, scarcely one half as long as 
the fore wings and about twice the length 
of the head, rather thick, obtuse, with 
diameter equal, roughened with scales. 
Maxillary palpi none. Labial palpi none. 
Tongue none. 
I supposed at first this insect must 
belong to Tinagma, but it differs from it 
in the neuration of the wings, in orna- 
mentation, and in its characters as given 
above. The perfect insect is very beau- 
tiful. I will not describe it, although 
your specimens will not appear until next 
spring. 
I send you a leaf of Oslrya Virginica, 
containing what to me is a novel mine. 
I found it for the first time a few days 
ago, when looking for cocoons intended 
for you. I should be glad to learn 
whether you know of a larva having a 
similar habit. The mine begins along 
the midribs, and scarcely ever exceeds 
the limits of the two veins, between 
which it is first commenced. Its pecu- 
liarity consists in the construction of 
lateral walls of “ frass” within the mine, 
that are extended as the mine increases 
in length, forming a tube, transparent 
above and below, which leads to an 
opaque one alongside of the midrib of 
the leaf. When the larva is alarmed or 
disturbed it retreats along the way, and 
conceals itself under the opaque portion 
along the midrib. It quits the leaf to 
undergo its transformation and weave a 
little ovoid cocoon. 
I seut you a Lilhocollelis which mines 
this leaf also, and there is still another 
species in it, which had not become 
pupa at that time, whose cocoon is a 
little ovoid mass formed of “ frass.” 
******* 
Yours most truly, 
Bkackeniudge Clemens. 
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