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and Anthozoa. He has been assisted specially by Miss Katharine J. Bush, who has also reported directly upon some portions of the Mollusca. Prof. S. J. Smith, of the same college, has been charged with the study of the Crustacea, and all collections of this group, except a few of the minor divisions, are submitted to him. Other collaborators during the year have been Prof. L. A. Lee, of Bowdoin College, on the Foraminifera; Prof. Edwin Linton, of Washington and Jefferson College, and Prof. B. F. Koons, of the Storr's Agricultural School, on the internal parasites of fishes; Mr. James E. Benedict, of the steamer Albatross, on the Annelids; Mr. J. Walter Fewkes, of the Museum of Comparative Zoology, on the free Medusæ.

The Hon. Theodore Lyman, of Brookline, Mass., has kindly offered to examine and report upon the Ophiurans from the western coast of America, in addition