GLOSSARY 



Adductor, a muscle to draw shells together 



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Aperture, the opening of a univalve shell 119 



Bivalve, a mollusk with two shells 20 



Brachiopod, a peculiar animal with two shells, 



sometimes classed with the mollusks 13 



Branchial, relating to the gills 124 



Byssus, a bundle of fibers, for anchoring 38 



Canal, the channel or tube of a shell 119 



Carniverous, flesh-eating, like the Murex 1 19 



Chiton (ki-ton), a flat mollusk having eight 



shells 253 



Columella, the central post of a shell 119 



Coralline, a small, stony seaweed, resembling 



coral 7 



Cordate, heart-shaped, like the Cardium 72 



' Coriaceous, tough and leathery 295 



Corrugated, marked with ridges 16^ 



Crenulated, marked with small scallops 251 



Dextral, opening on the right side. 1 19 



Epidermis, the outside coating of a shell 23 



Escutcheon, the depression behind the beaks 



of certain bivalves 80 



Formaldehyde, a preservative fluid 141 



Fusiform, spindle-shaped, pointed at both ends. 1 19 



Gasteropod, a snail-like mollusk 1 18 



Genus, a group of similar species 60 



