JOURNAL OF CONCHOLOGY. 



47 



THE CONCHOLOGICAL SOCIETY'S LIST OF 

 BRITISH LAND & FRESHWATER MOLLUSCA.— iJ 



AQUATIC. 



CONCHIFERA. 



SPH/ERIIDyE. 



SPH^RIUM Scop. 



1 Sphserium corneum (Z). 



l> V. flavescens {Macoill.). 

 c V. nucleus {Stud.), 

 d V. Scaldiana [Noi m. ). 

 e V. Pisidioides Gray. 



2 Sphserium rivicola {Leach). 



3 SpliEerium ovale {Fer.). 



4 Sphaerium lacustre {Mull.). 



h V. Hrochoniana Potirg. 



c V. rotundaye^ 



d V. Ryckholtii {Norm. ). 



PISIDIUM C. Pfeiffer. 



5 Pisidium amnicum {Mull.). 



6 Pisidium fontinale {Drap.). 



b V. Henslowana (6'/;(?//. ). 

 c V. pulchellayc/?_j';2j-. 

 d V. pallida Gassics. 

 e V. cinerea Alder. 



7 Pisidium pusillum' ((7w?£/m). 



(^ V. obtusalis {Lam.). 



8 Pisidium nitidum Jen. 



b V. splendens y!/(7^. 



9 Pisidium roseum Scholtz. 



UNIONID^. 



UNIO Philippsson. 



10 Unio tumidus Phil. 



b V. radiata Cc//^. 

 c V. ovalis {RLont.). 



11 Unio pictorum (Z.). 



(5' V. radiata ALoq. 



c V. curvirostris Norm. 



d V. latior y^^ 



e V. compressa y?^ 



12 Unio margaritifer (Z.). 



1^ V. sinuata Lam. 

 c V. Roissyi Mich. 



ANODONTA Lmn. 



13 x\nodonta cygnea (Z. ). 



b V. radiata {Mull.), 

 c V. incrassata {Shepp.). 

 d V. Zellensis {Gmel.). 

 e V. pallida yi?^ 

 y V. rostrata Rossm. 



14 Anodonta anatina (Z. )• 



i?' V. radiata yeff. 



c V. ventricosa C. Pfr. 



d V. complanata I^ossm. 



DRELSSENIDyE. 



DREISSP:NA VanBen. 



15 Dreissena potymorplia {Pall.). 



GASTROPODA. 



NERITID^. 



NERITINA Lam. 



16 Neritina iluviatilis (Z.). 



b V. trifasciata Colb. 

 c V. undulata Co/^. 

 d V. cerina C(7/^. 

 f V. nigrescens Colb. 



PALUDINID^. 



PALUDINA Lam. 



17 Paludina contecta (ilZ?7/£/). 



b V. virescens Je^. 



18 Paludina vivipara(Z.). 



(^ V. albida N. &=■ T. 



c V. unicolor Jeff. 



d V. atro-purpurea Lloyd. 



BYTHINIA Gray. 



19 Bythinia tentaculata (Z.). 



Zi V. ventricosa {Menke). 

 c V. excavata Jeff, 

 d V. albida Rim7ner. 

 e m. decoUatum y^/fi 



20 Bythinia Leachii {Shepp. ). 



b V. elongata y?^. 

 c V. albida Rimmer. 



