Collections

Specimen, shell

Other name(s): 
Steromphala umbilicalis
Gibbula umbilicalis
umbilical trochid
purple topsnail
flat topsnail
flat top shell
Collection ID: 
Z555.1.21
Collection: 
Zoology
Class: Gastropoda. 2 specimens. Various shades of grey which form a speckled tessellating pattern. Conical but with convex sides (cyrtoconoid). Found on rocky shores around seaweed and in rock pools.

Field collection

CollectorRobert Rendall

References

Reference literatureRendall, R. 'Mollusca Orcandensia' (1956) Proceedings of the Royal Society of Edinburgh 66, pp.131-201 (p.156)