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REPORT 



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INVERTEBRATA OF MASSACHUSETTS, 



COMPRISING THE 



MOLLUSCA, CRUSTACEA, ANNELIDA, AND RADIATA. 



PUBLISHED AGREEABLY TO AN ORDER OF 



THE LEGISLATURE, 



BY THE COMMISSIONERS ON THE ZOOLOGICAL AND BOTANICAL SURVEY 

 OF THE STATE. 





CAMBRIDGE: 

 FOLSOM, WELLS, AND THURSTON, 



PRINTERS TO THE UNIVERSITY. 



1841. 



