Report on the Invertebrata of Massachusetts: Comprising the Mollusca, Crustacea, Annelida, and Radiata

Acad Amer angle angular animal aperture apex base beaks body whorl Bost breadth inch Brit callus Cape Cod Catal CHEMN Chiton Coll color columella compressed concave Conch Conchology conspicuous convex Couthouy Crustacea curved deep DESHAYES diameter DILLWYN divergence edge elevated elongated Encyc epidermis FIGURE flattened folds Fusus gaping GENUS grooved height inch Helix hinge margin Hist horn-color inequilateral inner lip interior Lamarck Length inch ligament lines of growth lower whorl marked Martha's Vineyard Méth MONTAGU narrow nearly numerous oblique obtuse operculum operculum horny oval pillar posterior posteriorly prominent Provincetown RACKETT radiating lines regularly revolving lines ribs ridges rounded Shell small side slightly smooth Sowerby species specimens spire stomachs of fishes sub-oval surface suture Syst tentacula thick thickened thin tooth Totten Trans transverse TURTON umbilicus upper usually valve Vert whorls five whorls four wrinkled yellowish Zool