THE WHITE ANT. 283 
87. Argyresthia austerella Zeller. This moth, u I am convinced, feeds in 
some way on it; and in latter May and in June the imago 
may be found about the trees." (Chambers.) 
88. Coleophora sp. M A Coleophora larva in its case feeds on the leaves 
in autumn and early spring. I have not bred it." (Chambers in 
letter.) 
Hymenoptera. 
89. The horn-tail borers Tremex columba ^Linn.). 
Platyptera. 
90. Termes Jlavipes Kollar. We have observed white ants injuring a 
wounded elm tree near the common at Salem, Mass. 
Hemiptera-Homoptera. 
91. Tetranewa ulmi (Linn.) (Oestlund.) 
92. Pemphigus ulmifusus (Walsh.) (Oestlund.) 
Besides the determined species of insects found on the elm, Professor 
Biley has kindly furnished me with notes upon forty-two species addi- 
tional, but not yet determined. This carries the number of elm insects 
up to the neighborhood of one hundred and twenty-five species. The 
undetermined species belong to the following groups : Lepidoptera, 11 ; 
Tenthredinidce, 1; Cecidomyiidce, 16; Coccidce, 5; Aphis, 2; Pemphi- 
gince, 4j Acarina (Phytoptus),3; total, 42 species. 
FEEDINa ON THE DEAD WOOD. 
08moderma eremicola Knocb. 
Larvae and beetles of this insect were found July 18, 1874, at St. 
Louis, Mo., at the base of the hollow trunk of a large elm, and several 
more of the larvae were found at the same place. All were about full 
grown and were feeding on the decaying wood, reducing it to a tan- 
bark red, excrementitious powder, of which there were bushels filling 
the base of the cavity. Their pellets of excrement which were noticed 
are flattened-oval and compact. Eggs were also found in abundance 
They are perfectly spherical, about 3 mm in diameter, opaque-white, 
and with tolerably tough skin. The young larvae differ in no respect 
from the mature, except in being more hirsute, or the hairs being 
longer. The mature larva, before changing, forms a large egg-shaped 
ball of excrement and loose earth. (See Schaupp, description of larva 
of Osmoderma scabra, Bull. Brooklyn Ent. Soc, vol. ii, p. 98.) (Biley's 
unpublished notes. 
Mr. W. L. Devereaux writes me that Osmoderma scabra and eremicola 
in the larva state channel up the heart of large trees and often enter into 
close proximity with the live wood. " None of our large trees, as a rule, 
