244 FISHERIES OF THE UNITED STATES. [60] 



Fulgur carica, Conrad. Periwinkle, Winkle, and Wrinkle; alsoBibbon 

 Whelk. 

 (See "Injurious Gasteropods.") 



Sycotypus canaliculars, Gill. Periwinkle, Winkle, and Wrinkle; also 

 Hairy Whelk. 

 (See "Injurious Gasteropods.") 



Littorina littorea (Linne), Menke. Penny winkle, or Sea Snail. North- 

 eastern coast, from Connecticut to Nova Scotia. 



33654. Wood's Holl, Mass. United States Fish Commission. 



Purpura lapillus, Lamarck. Sea Snail. 

 (See "Injurious Gasteropods.") 



llyanassa obsoleta, Stimpson. Sea Snail. Whole southern and eastern 

 coast of the United States, but rare and local north of Cape 

 Cod. 



33633. Vineyard Sound. United States Fish Commission. 



Lunatia heros, Adams. 



(See "Injurious Gasteropods.") 



Neverita duplicata, Stimpson. 



(See " Injurious Gasteropods.") 

 Haliotis (several species). See below. 



Useful by producing Pearl shell. 



Trochiscus norrissii, Sowerby. Turban Shell. 



32830. Coast of California, H. Hemphill. 



Pomaulax undosum, Chemnitz. 



32832. Coast of California. Natural state. H.Hemphill. 



32831. Coast of California. Prepared to show pearly layers. H. Hemp- 

 hill. 



Haliotis (various species). Abalones or Sea-Ears. Pacific coast of the 

 United States from San Francisco southward. Coast of Lower 

 California and Mexico. Not common south of Magdalena Bay, 

 Lower California. 



Haliotis TcamchatMna. 



32838. Coast of Alaska. J. G. Swan. 



Haliotis corrugata, Gray. Bough Sea-Ear. 



32890. Coast of Southern California. W. H. Dall. 

 Haliotis rufescens, Sowerby. Abalone or Bed Sea-Ear. 



32900. Monterey, California. H. Hemphill. 

 Haliotis cracherodii, Leach. White Abalone. 



32823. Coast of California. Paul Schumacher. 



32899. Monterey, California. H. Hemphill. 



