Description
Author: Jan Delsing
Text ID: 90529
Text Type: 1
Page: 0
Created: 2018-11-19 15:20:40 - User Delsing Jan
Last change: 2018-11-19 15:21:52 - User Delsing Jan
Language: EN
Text function: [[t:1264546,textblock=90529,elang=EN;Description]]
Differs from P. eucosmia (Dall, 1901) = pisum [Reeve, 1850] non Sowerby, 1836) by its considerably denser, undulating concentric rings, by its more rounded form and presumably also by its smaller size. Dorsal margin concave anterior to beaks, but then suddenly becomes convex; posterior to beaks margin first weakly concave, then convex. Hinge and sculpture otherwise similar to the above species (left valve only). Dimensions: Length 3 mm; width 2.9 mm.
Locality
Station 3, 5 km NW of Denham, Sharks (= Shark) Bay, north-west Australia, 3 m, sand with rich vegetation (holotype) (reg. no. 67726).
Ponder W F - 1978 - The unfigured mollusca of J. Thiele