CYCLOCHLAMYDIDAE

Cyclochlamys pileolus

Dijkstra & Marshall, 2008

Figures

 

      Holotype (lv)                  juvenile (lv)               semi-adult (lv)                                                                                                            

                         

Original name  Cyclochlamys pileolus Dijkstra & Marshall, 2008
Autoreference   Dijkstra & Marshall, 2008: 33, figs 27, 28A-G.
Reference   Dijkstra, H.H. & B.A. Marshall, 2008. The Recent Pectinoidea of the New Zealand region (Mollusca: Bivalvia: Propeamussiidae, Pectinidae and Spondylidae). - Molluscan Research 28(1): 1-88, 70 figs.
Type data   Holotype (pr: H 1.5, L 1.4 mm, D 0.5 mm) Museum of New Zealand Te Papa Tongarewa (NMNZ M.155879). Type locality: New Zealand, Stewart Island, Halfmoon Bay, 27 m, alive, leg. E.C. Smith, xii.1955.
Description

  Shell small up to 1.5 mm high, fragile, subcircular, weakly posteriorly oblique, inequivalve and inequilateral, left valve strongly convex, right valve weakly inflated, auricles slightly equal in size and shape and continuous with disc, translucent white.

  Left valve sculptured with very strong, ventrally sloping commarginal lamellae and weak radial riblets with strong, rounded, fingernail-like scales at intersections.Right valve with outer layer of commarginally elongate, hexagonal prisms. Internal riblets lacking.

Distribution

 

Stewart Island, New Zealand (TL)

Habitat   Shells sublittorally and upper bathyally from clean, bryozoan/shell substrata.