Tab 5. 



J. Leda pernula, Mull. 



2. — minuta, Miill. 



3. Aphrodite grønlandica, Chemu. 



4. Cardium ciliatum, Fabr. 



5. — elegantulura, Beck. 



6. Poromya granulata, Nyst. 



7. Astarte crebricostata, Forb. 



8. Tridonta boiealis, Chemn. 



