Bithyniidae

Figure 7.Bithynia mazandaranensissp. n. a, b shell c operculum d detail of the shell surface.

Figure 14.Naesiotus species. A–D Naesiotus nux (Broderip, 1832) A lectotype NHMUK 1975172 (H = 21.5) B–C lectotype of Bulimus incrassatus Pfeiffer, 1853 NHMUK 1975157 (H = 17.3) C sculpture on dorsal side of (pen)ultimate whorl D lectotype of Bulimus verrucosus (Pfeiffer, 1855) NHMUK 1975168 (H = 22.5) E–F Naesiotus ustulatus (Sowerby I, 1833) E lectotype NHMUK 20100633 (H = 13.95) F possible syntype of Bulimulus (Naesiotus) ustulatus phlegonis Dall & Ochsner, 1928 NHMUK 1937.6.18.2 (H = 12.5) G Naesiotus nucula (Pfeiffer, 1853), lectotype NHMUK 1975155 (H = 11.2) H Naesiotus galapaganus (Pfeiffer, 1855), lectotype NHMUK 1975146 (H = 15.1) I Naesiotus ventrosus (Reibisch, 1892), paralectotype NHMUK 1894.6.8.1 (H = 18.9) J Naesiotus achatellinus (Forbes, 1850), holotype NHMUK 1855.4.5.25 (H = 19.0). All enlarged.

Hampen Sø, Midtjylland, Danmark

Figure L29.Labels. i Bulimus incrassatus Pfeiffer, 1853 ii Bulimulus (Drymaeus) interruptus Preston, 1909.

Hampen Sø, Midtjylland, Danmark

Hampen Sø, Midtjylland, Danmark

Hampen Sø, Midtjylland, Danmark

Hampen Sø, Midtjylland, Danmark

Hampen Sø, Midtjylland, Danmark