246 BULLETIN" 91, UNITED STATES NATIONAL MUSEUM. 



Oliva dactyliola Duclos, Moluccas. 

 elegans Lamarck, Ceylon. 

 nana Lamarck, America. 

 paxillus Reeve. 



picta Reeve, Philippine Islands. 

 scitula Marrat. 



truncata Marrat, Cape of Good Hope. 

 Ommatostrephes oualaniensis Lesson, Oualan Island (Caroline Islands). 

 Onchidium burnupi Collinge, Umlaas Lagoon, Natal. 

 Oncidium peroni Cuvier, Isle of France. 

 Oniscia macandrewi Sowerby, Japan. 

 Onithochiton alveolatum Rochebrune, Cape of Good Hope. 



isipingoensis Sykes, Isipingo, South Africa. 

 Oscaniella nigropunctata Bergh, off Cape Infanta. 

 Oscaniopsis pleurobrancheana Bergh, Tugela River. 

 Ostrea cucullata Born, Ascension Island. 



echinata Quoy and Gaimard, Amboyna. 



lacerata Hanley, Senegal? 



lentiginosa Sowerby. 



parasitica Chemnitz, Cape of Good Hope or East Indies. 

 prismatica Gray. 



pusio Linnaeus, Australia. 



rosacea Deshayes, Senegal. 



rufa Lamarck, America. 



senegalensis Gmelin, West Africa. 



tuberculata Lamarck, Timor Island. 

 Ovula carnea Lamarck, Mediterranean and coasts of Barbary. 

 Oxynoe pellucidus A. Adams. 



Palio (?) capensis Quoy and Gaimard, Cape of Good Hope. 

 Paludina Jcnysnaensis Krauss, Knysna River and Zoctendals Valley. 

 Pandora dissimilis Sowerby, Sea Point, Cape Town. 



similis Sowerby, Durban. 

 Panopea natalensis Woodward, Port Natal. 

 Paraplysia lowii Gilchrist. 

 Parmophorus imbricatus Quoy, New Ireland. 

 Patella albonotata Smith, Umkomaas, Natal. 



chinensis Linnaeus, Mediterranean. 



concolor Krauss, Natal. 



decemcostata Smith, Algoa Bay. 



echinulata Krauss, Table Bay. 



exarata Nuttall, California. 



fasciata Krauss, Natal. 



graeca Linnaeus, Mediterranean. 



maculata Blainville, Cape of Good Hope. 



morbida Reeve, Cape of Good Hope. 



natalensis Krauss, Natal. 



nigroalba Blainville, Cape of Good Hope. 



obtecta Krauss, Table Bay. 



patriarcha Pilsbry, Cape of Good Hope. 



plicata Born, Strait of Magellan. 



radiata Krauss, Natal. 



rustica Linnaeus. 



safiana Lamarck, Morocco. 



sanguinans Reeve, Cape Natal. 



