506 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



Wilson, H. V. — Continued. 



1919. In regard to species and sponges. The Scientific Monthly for 1919, 

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1920 ; A remarkable form of skeletal element in the lithistid sponges. 

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1881. On a new genus and species of Sponge (Alemo scitchellensis) with 

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