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Cerithidea sacrata.
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Patella granatina (Linnaeus).
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Radula of Elysia viridis Mont.... Type (a).
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Four examples of Limmnaea peregra Mull., from salt marshes near the Sea of Aral, showing different effects produced by abnormal conditions of life.
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Portion of the radula of Ianthina communis Lam..
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Solarium perspecticum (Linnaeus).
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Reputed Shower of Fish and Nikolaisberg, Transylvania.
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Patella caerulea (Lamarck).
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Manuel Caballer, Jesus Ortea, Samuel Narciso
Zookeys
Figures 1–8.Rissoella morrocoyensis sp. n. 1–5: on a leaf of Thalassia testudinum (1–2), ventral view (3), lateral view (4), dorsal view (5). Rissoella venezolanicola sp. n. 6–8: lateral view (6), ventral view (7), dorsal view (8).
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Figure 3.Cyerce bourbonicasp. n. A ventral view of holotype B selection of larger cerata of paratype (formaldehyde) showing morphology: globular patches at base near attachment point, the small flap, and some black pigment spots remaining at the distal end C photograph of ceras of paratype (alcohol) from anterior side showing denticulate margin and pointed papillae D whole radula of paratype (formaldehyde) E single tooth magnified to show denticles and shape of shaft. Scale bars 100 µm.
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Vladimir Pešić, Peter Glöer
Zookeys
Figure 4.a Dry old stillwater channel near the River Crnojevića (September, 2012), sampling site of Bithynia montenegrina (Wohlberedt, 1901) b Lymnaea raphidia (Bourguignat, 1860) from Božaj, Montenegro.
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Bavaria, Germany
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Cerithium giganteum (Lamarck).
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Scala groenlandica.
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Turritella angulata (Sowerby).
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Limnaea peregra Mull.; e,e, eyes; t,t, tentacles (A). Helix nemoralis Mull.: e,e, eyes; t,t, tentacles; p.o, pulmonary orifice (B)
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Ianthina fragilis Lam. FL, float; O, ova; Pr, proboscis; Br, branchiae; F, foot.
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Solarium perspecticum (Linnaeus).
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Scala argulata.
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Manuel Caballer, Jesus Ortea, Samuel Narciso
Zookeys
Figures 9–12.Rissoella morrocoyensis sp. n. 9–10: view of the aperture and the umbilicus (9) detail of the umbilicus (10). Rissoella venezolanicola sp. n. 11–12: view of the aperture and the umbilicus (11), detail of the umbilicus 12.
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Plate 14.Cyerce bourbonica sp. n., 12 mm holotype, La Réunion, photo: H Flodrops.
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Vladimir Pešić, Peter Glöer
Zookeys
Figure 5.Shell: a Ancylus fluviatilis (topotype, Germany) b Ancylus recurvus (Zeta river, Montenegro).
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Amphibola avellana Chem..
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Aplustrum aplustre L., Mauritius, showing the partly internal shell.