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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