Illustrations 



Olive Shells 



Marine Univalves ....... 



Auger Shells, Notch Side Shells and Crossbarred Shells 



A Rocky Beach Where Periwinkles Abound. Queen Conch 



of West Indies . 

 Cone Shells and a Conch Shell . 

 Beak Shell and Conch Shells 



Little Screw Shell, Pelican's Foot and Scorpion Shell 

 Cowries . . 



Cowries and Coffee Bean Shells 

 Egg Shells 



Helmet Shells . . 



Tun Shells and Helmet Shells . 

 Large Marine Snails 

 Moon Shells and Others . 

 Slipper Shells and Giant Moon Shell 

 Limpets and Carrier Shells 

 Carrier Shell and Sun-dial Shells 

 Wentletraps, Violet Snails and Others 

 Periwinkles and Worm Shells 

 Horn Shells ... 

 Marsh and Apple Snails . 

 Round-mouthed Snails . 

 Sea Snails and Turban Shells . 

 Star Shells and Top Shells 



Top Shells 



Top Shells and Others 



Ear Shells. Abalones 



The Red Abalone ..... 



A Clam Fisherman on the Mississippi River 



Dead Man's Island, off San Pedro Harbour, Southern 



California ... 



A Cactus Fence in Southern California 

 Drying Abalone Meats for Export to Japan 

 Slit Limpets and Key-hole Limpets 

 Limpets, Chiton and Shield Shell 

 The Giant Chiton . 

 Chitons and Bubble Shells 

 Land Snails and Umbrella Shell 

 Tropical Snails 



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