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33.

review was based forms part of the collection of the U.S. Nat. Museum.

Pilsbry (Henry A.)

Preliminary notices of new forms of fresh water Mollusks.

[The Nautilus, vol. V. pp. 142-3. April 1 1892.]

Describes Fluminicola Merriami Pilsby and Beecher, from specimens furnished by U.S. Nat. Mus.

Simpson (Charles Torrey)

Notes on a collecting trip in Florida.

[Forest and Stream, New York, vol. XXXVIII, No. 5. p. 99. Feb. 4, 1892.]

Simpson (Charles Torrey)

Notes on Unionidae.
[The Nautilus, vol. V. pp. 86-88. Dec. 1891.]

These notes are principally devoted to the discussion of the mutual relations of Unio radiatus and