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figured more or less in detail. After leaving Wood's Holl, he completed the identifications of the undetermined species of Echini, in the collection of the Museum, for that purpose visiting the Museum of Comparative Zoology at Cambridge, Mass., where he was given the opportunity of making comparisons with the unrivaled collection of Mr. Alexander Agassiz, by whom personal assistance was also kindly rendered. The Echini obtained by the steamer Albatross in the region of the Bahama Islands during the spring of 1886 were also identified, and have been included in a general catalogue of the collection of Echini belonging to the National Museum, to be published in the proceedings. Since completing work upon the Echini, the curator has begun to revise the collection of starfishes in the same manner, and during the spring of 1886 made a complete