 | Page/Plate |
| Opisthobranch Molluscs of the Seas of Russia (in Russian) | p 63-64 |
| Marine Molluscs of Madeira | p 280; Pl. 57/6 |
| Encyclopedia of Marine Gastropods | p 464/5 |
| West African Seashells | p 249 |
| Die europäischen Meeresschnecken | p 42; 239/1; 241/21 |
| European Seashells | p 293/16-17 |
| Marine Mollusca of the Faroes | p 95 |
| Atlas Malacològic del Delta de l'Ebre | p 82/Pl. 358 |
| Microconchas de la Bahía de San Sebastián | p 5/2 |
| Vita Marina | Vol. 41/3, p 98 |
| Synonyms |
| Bulla norvegica Bruguière, J.G., 1789 |
| Marine Mollusca of the Faroes | p 95 |
| Bulla akera Gmelin, J.F., 1791 |
| Marine Mollusca of the Faroes | p 95 |
| Bulla resiliens Donovan, E., 1801 |
| Marine Mollusca of the Faroes | p 95 |
| Bulla fragilis Lamarck, J.B.P.A. de, 1822 |
| Marine Mollusca of the Faroes | p 95 |
| Bulla globosa Cantraine, F.J., 1840 |
| Die europäischen Meeresschnecken | p 26 |
| Marine Mollusca of the Faroes | p 95 |
| Eucampe donovani Leach, W.E., 1852 |
| Marine Mollusca of the Faroes | p 95 |
| Bulla hanleyi Adams, 1855 |
| Marine Mollusca of the Faroes | p 95 |
| Akera tenuis Brusina, S., 1866 |
| Marine Mollusca of the Faroes | p 95 |
| Akera farrani Winckworth, R., 1932 |
| Marine Mollusca of the Faroes | p 95 |
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