Cystiscidae – Cystiscinae: Cystiscus alternans (Pritchard & Gatliff, 1899) (‘alternating margin-shell’)
Synonym(s): alternans Pritchard & Gatliff, 1899 multiplicata Tate & May, 1900.
Typical shell-length 2.0 mm. Lives in offshore waters under rocks and stones. Native. Endemic to southeastern Australia (TAS, VIC and SA).
Classification
Class: Gastropoda
Subclass: Caenogastropoda – Sorbeoconcha
Order: Hypsogastropoda – Neogastropoda
Superfamily: Muricoidea
Family: Cystiscidae
Subfamily: Cystiscinae
Genus: Cystiscus
Localities for Cystiscus alternans
no coastal locality records for this species currently available