Copei Abbott, 2, 15; notes on the
habits of Aphredoderus Sayanus,
79, 95; on Cyprinus corporalis, &c.,
152, 154; on Squalus americanus,
referring it to the genus Odontaspis,
390, 399.

Ægiothus, monograph of, by Elliott
Coues, 373.

Ailanthus silk-worm, remarks on, by
Dr. Stewardson, 525.

Allen, Harrison, M. D., descriptions of
new Pteropine Bats from Africa, 153,
156; description of a new Mexican
Bat, 334, 359.

Anableps, description of a new species
of, by T. Gill, 3; remarks on, by
Dr. Le Conte, 21; observations on,
by Prof. Wyman, 56.
Anculosa, description of new species
of, by I. Lea, 14.
Anodontæ, descriptions of two new
species of, by I. Lea, 56.

Ants, note on, by S. B. Buckley, 9.
Aphredoderus Sayanus, notes on the
habits of, by C. C. Abbott, 95.
Anisotremus, by T. Gill, 105.
Aristelliger, by E. D. Cope, 494.
Aulostomatoids, on a new type of,
found in Washington Territory, 168.

Baculites, revision of the species of, by

from Africa, by H. Allen, M. D., 156;
description of a new Mexican, by H.
Allen, M. D., 359.

Binney, W. G., Catalogue of Molluscs
from British N. America, 311, 330;
notes on the Molluscs of California,
311, 331.

Blennoids, on a new generic type of,
by T. Gill, 261.

Bombyx cynthia, (Ailanthus silk-
worm,) remarks on, by Dr. Steward-
son, 525.
Brachiopoda, synopsis of American
cretaceous, by W. M. Gabb, 18.
Brown, A. D., descriptions of two new
species of Helix, 311, 333.
Buckley, S. B., notes on Ants in Texas,
2, 9; note on the Bartram Oak, 334,
361; description of new plants from
Texas, 391, 448.

Cassin, J., communication in reference
to a new species of Goose from Arc-
tic America, 72; descriptions of new
Birds from Western Africa in the
Museum of the Academy, 334, 335.
Centropyx, by E. D. Cope, 494.
Cephalopod, description of a new car-
boniferous, by Wm. M. Gabb, 367.
Chænichthyoids, synopsis of, by T.