Redefinition of the genus Notoplax H. Adams, 1861, and recognition of the monotypic New Zealand genus Pseudotonicia Ashby, 1928 (Mollusca: Polyplacophora: Acanthochitonidae)

Abstract

The genus Notoplax is redefined, and the monotypic genus Pseudotonicia, endemic to New Zealand, which was previously considered a synonym of Notoplax, is recognised as a distinct genus and defined. The sole member of this genus, P. cuneata, is reviewed and redescribed, and its habitat given. Similarities between Pseudotonicia and the Australian genus Bassethullia are discussed.