6. Vallonia spp. 6.1 Mount with two Montagu blue hexagonal cards for Helix crenella Montagu, 1803 (EXEMS Moll4149) and Helix paludosa da Costa, 1778 (EXEMS Moll4148), no shells attached. 6.2 3 shells identified as Vallonia excentrica Sterki, 1893, one can be associated with paludosa card (arrowed). 6.3 4 shells tentatively identified as Vallonia costata (Müller, 1774). 7. Bulla diaphana Montagu, 1803 [Trivia arctica (Pulteney, 1799)]. 7.1 “Rowley” box for lot 4311 with 2 shells, Syntypes. 7.2 Montagu hexagonal blue card mount with 1 shell attached. 7.3 Apertural and abapertural views of largest but damaged syntype, EXEMS Moll4311a. 8. Helix lacuna Montagu, 1803 [Lacuna parva (da Costa, 1778)]. 8.1 Montagu black hexagonal card mount with 5 shells, bottom right (arrowed) is Lacuna vincta. 8.2 basal, apertural and abapertural view of 1 of 4 syntypes, EXEMS Moll4189. 9. Nautilus lacustris Montagu, 1803 [Segmentina nitida (Müller, 1774)]. 9.1 “Rowley” box with blue card and 4 shells, Syntypes, EXEMS Moll4106. 9.2 Montagu blue hexagonal card mount and printed label. 9.3 apical, basal and lateral views of syntype EXEMS Moll4106a. 10. Helix lutea Montagu, 1803 [Radix balthica (Linnaeus, 1758)]. 10.1 Old box and original hand-written label for lot 4117. 10.2 Apertural and abapertural views of unique syntype EXEMS Moll4117.

  Part of: Oliver PG, Morgenroth H (2018) Additional Type and other Notable specimens of Mollusca from the Montagu Collection in the Royal Albert Memorial Museum & Art Gallery, Exeter. Zoosystematics and Evolution 94(2): 281-303. https://doi.org/10.3897/zse.94.24776