Synopsis
Report On The 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 Botancal Survey Of The State by Augustus A. Gould. This scholarly taxonomic monograph (Part 1 of 4) presents a structured survey of Massachusetts invertebrates, beginning with Mollusca. It combines a program note, acknowledgments, methodological guidance, and an extensive catalog of shells with descriptive plates. Gould aims to unify animal biology with shell form, places emphasis on field and cabinet comparisons with European and American conchologists to confirm identifications and nomenclature, and explains conventions for shell comparison along with a novel measure for univalves called divergence. The Mollusca section introduces conchology, outlines three divisions of mollusks (conchiferous, bivalves, and univalves), and offers detailed species accounts with shell morphology, habitat notes, distribution, and notes on economic uses. The work also treats Cirripedia and other shelled groups, and begins the Crustacea, providing careful taxonomic decisions, synonymies, and cross-references to classical and contemporary sources. The excerpt ends mid-entry, signaling a comprehensive, plate-driven catalogue of Massachusetts invertebrates with biogeographic context centered on the Cape Cod region and its ecological and economic significance.
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