NO. 3579 PORTLAND CATALOGUE — REHDER 39 



Helminthogiyptidae-Cepolinae 

 vitellus, Helix =Polymita picta (Born) 



Helicidae 

 alba, Helix =nomen dubium 



MOLLUSCA-BIVALVIA 



Arcidae 

 fusca, Area = Area sp. 

 nodulosa, Area=Anadara granosa (Linnaeus) 



Cucullaeidae 



labiata, Arca=Cucullaea labiata (Lightfoot) 



Mytilidae 



castaneus, Mytilus= Modiolus vagina Lamarck 

 pietus, Mytilus=Perna picta (Born) 



Pinnidae 



rigida, Pinna=Atrina rigida (Lightfoot) 



Isognomonidae 



Isognoma=Isognomon [Lightfoot] 



Isognomon [Lightfoot] 



rigida, Isognoma= Isognomon sp. 



Anomiidae 

 Placuna [Lightfoot] 



Ostreidae 

 purpurata, Ostrea=Ostrea cucullata (Born) 



Unionidae 

 complanata, Mya=Elliptio complanatus (Lightfoot) 

 ovalis, Mya=Unio ovalis (Lightfoot) 



crassa cytherea Kiister 



Chamidae 

 pannosus, Chama lazarus=Chama lazarus Linnaeus 



Cardiidae 

 hystrix, Cardium = Trachycardium aculeatum (Liiniaeus) 

 impressum, Cardium = Corculum impressum (Lightfoot) 



humanum Roding 

 protrusum, Cardium=Corculum impressum (Lightfoot) 

 robustum, Cardium = Dinocardium robustum (Lightfoot) 

 spinosum, Cardium=Acanthocardia echinatum (Linnaeus) 



