454 
Dryopteris propinqua (Br.). In the Synopsis Filicum this is 
made a variety of JV. wzitum, but it agrees with no WV. umitum that 
I ever saw. Rocky banks of Eleanor Creek, in deep forest (128). 
Dryopteris (Sagenia) Martinicensis (Spreng.) Kuntze. (Aspid- 
zum macrophyllum Baker.) Steep hillsides in deep forest, Eleanor 
Creek (381). 
Antrophyum subsessile Kze. Dry hillsides about Menoa (371). 
Nos. 364, 377, 380 and 401 are without fruit and not ina fit 
condition for determination. 
Resemblance of an Insect Larva to a Lichen Fruit. 
é By G. E. STONE. 
During the past summer while examining the bark of some 
sickly Camperdown Elms I observed a number of bodies about % 
inch in diameter, with a dark center and a drab lacerated folia- 
ceous margin. 
These bodies were considerably scattered over the trunk of the 
tree, they being confined largely, however, to the crevices caused 
by the irregularities of the bark. In taking a hasty glance at 
these bodies my first impression was that they were the apothecia 
of some lichen with which I was not familiar, although they had 
a marked resemblance in color, size and form to the apothecia of 
Physcia hypoleuca. In fact some of tliese bodies were attached 
to the thallus of species of Physcia, while others were simply at- 
tached to the bark, thus giving the appearance of a lichen fruit 
without a thallus. This feature impressed me as rather singular, 
as I had no previous recollection of seeing apothecia of this nature © 
without a thallus. On closer examination, however, it could be 
seen that these bodies were not vegetable organisms, as piercing 
them with a sharp pointed stick soon revealed their animal char- 
acteristics. Indeed, so marked was the resemblance of these 
bodies to certain lichen fruit that it required some little observa- 
tion before they could be discriminated. 
On taking them to the College Insectary I soon learned that 
they were the larvae of an insect known to entomologists as the 
Imported Elm-leaf Beetle—Gossyparia ulmi Geoff—which has not : 
been in Massachusetts but a few years, _ 
