71 



hypnorum). — Limnaeus columella., Say, macrostomus, Say, 

 umbilicaius, Ad., tnodicellus, Say, desidiosus^ Say, elodes, 

 Say, catascopium, Say. — Ancylus rivularis^ Say, fuscus, 

 Adams. — Valvata tricarinata, Say, pupoides, Gould. — 

 Paludina decisa, Say. — Amnicola poratn, Say. — Natica 

 keros, Say [auch Gould ist der Ansicht, dass dies iV. «m- 

 pullaria,Lamk. sei. Der Lamarck'sche Name hat die Prio- 

 rität], triseriata, Say, immacula/ay Totten, canaliculafa, 

 Gould, duplicafa, Say, pusilla, Say, clausa^ Brod (= con- 

 soUdata, Couth., was ich noch Ijezweifeln möchte), ßava, 

 Gould. — lanthina fragilis, Lam. — Velutina laevigata, L. 

 zenata, Gould — Sigaretus haUotideus, L. [ist nicht diese 

 Art, sondern Coriocetla perspicuaj. — Tornatella punctato- 

 striata, Ad. — Vermetus lumbricalis^ L. — Skenea serpU' 

 loides, Mont. — Scalaria Novangliae, Couth., groenlandica, 

 Chemn., lineata, Say, multistriata, Say. — Margarita cine- 

 rea, Couth., obscttra, Couth., undulafa, Sow., arctica, Beck, 

 argenfata, Gould. — Littorina rudis, Donov; (= Turbo 

 obligaius, Say), tenebrosa, Mont. (= Tmbo vestitus, Say), 

 palliata^ Say. — Lacuna vincfa, Moni., neritoides, Gould. 

 — Cingula minuta, Totten, aculeus, Gould. — Turritella 

 erosa, Couth., inteniipfa, Totten. — Pyramis striahda, Couth. 

 (= Menestho albida, Moll.). — Odostomia producta, Adams, 

 fusca, Adams, exigua, Couth., seminuda, Adams, Irifida, 

 Totten. — Cerithium Emersonii Adams, terebrale Ad. [ist 

 trilineatum,V\\^^, nigrocinctum, Adams, Sayi, Menke, Greenii, 

 Adams. — Pleurofoma decussata, Couth., bicarinafa, Couth., 

 plicata, Adams. — Cancellaria Couthouyi, Jay (:= Admete 

 crispa, MöU. == Tntonium viridulum, O. Fabr.; nach einer 

 brieflichen Mittheilung des Herrn Möller). — Pusus islan- 

 dicus, Gm. {corneus, auct), pygmaeus, Gould, ventricosus, 

 Gray, tornatus, Gould, decemcostatus, Say, scalariformis, 

 Gould, bamfius, Donov., rufus, Mont., harpularius, Couth., 

 turricula, Mont., muricatuSy Mont. — Pyrula canaliculata, 

 L., carica, Gm. — Ranella caudata, Say. — Rostellaria 

 occidentalis, Beck. — Trichotropis borealis, Sow. (= costel- 

 lattis, Couth). Purpura lapillus, L. — Buccinum plicosum, 

 Menke [Fusus cinereus, Say), Donovani, Gray, undnfttm, L., 



