Article beginning on page 75.
Psyche 8:75, 1897.

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PSYCHE.
E. D. COPE, AS AN ENTOMOLOGIST.
BY C, R. OSTEN SACKEX, HEIDELBERG, GERMANY, I have just been reading in the papers
the sari news of the death of Prof. E. D. Cope, which occurred in Philadelphia
a few days ago, and cannot resist the
temptation to add my mite of homage,
to the many homages his memory will
receive.
My acquaintance with Professor Cope
was only superficial, but although from
a distance, I always was an admirer of
his genius.
As a slight memento of him I possess
a letter which he wrote me, on an ento-
mological question, just 30 years ago.
It is SO characteristic, especially in the precision and terseness of its expres-
sions, that I deem it worth while to
communicate an exact copy of it for
publication. The subject is the phe-
nomenon well-known in Germany under
the name of 6c Heerwurm," produced
by the larvae of a fly, scientifically called Sciara.
Cope was, I believe the first to observe it in the United States, where it has
been noticed several times since.
Heidelberg, Germany, April 18, 1897.
Acad. Nat, Sciences, Phila. 12, 27, 1867. My esteemed fried R. v. Ostcn
Sacken,
I trouble thee so far as to send some
larvae which I take to be Tipulideous,
but am not sure. - Will thee have the
kindness to refer me to the genus or
even the species if that be possible in
the present state of our knowledge ; or
to correct me if they not be Tipuliclae. -I am publishing in the Pr. A. N. S.
some observations on their habits, which are singular. They are subterraneous,
but migrate. They are however inca-
pable of progression on the ground, but
use each others backs, the hinder walk-
ing over the front, while the latter remain quiescent. They thus form an ever mov-
ing stream above and solid mass be-
low and seem like a slender slow
moving snake. Has such a habit been
noticed in any other species, e.g. in
Europe? I have not found it. An early
reply will be thankfully received by thy friend in the Nat. Sci.
EDW. D. COPE,
Academy ./V. Sci. Phtluda.




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