Vlll CONTENTS. 



Donax Pay 37 



Venus ' 41 



Spondylus 47 



Chama 49 



Area 53 



Ostrea 57 



Anomia 65 



Mytilus 69 



Pinna 75 



III. UNIVALVES. 



Argonauta • 79 



Nautilus 81 



Conus 85 



Cypraea 93 



Bulla 99 



Voluta 103 



Buccinum • • • • 113 



Strombus • 1^5 



Murex 131 



Troclius 141 



Turbo 149 



Helix 161 



Nerita - 173 



Haliotis 179 



Patella 1 83 



Dentalium 191 



Serpula . . . , ig3 



Teredo I97 



Sabella 199 



Glossary 20 1 



