CYCLOCHLAMYDIDAE

Cyclochlamys wanganellica

Dijkstra & Marshall, 2008

Figures

 

  Holotype (lv)

            

Original name  Cyclochlamys wanganellica Dijkstra & Marshall, 2008
Autoreference   Dijkstra & Marshall, 2008: 37, figs 29F, 29J, 30.
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 2.05 mm) Museum of New Zealand Te Papa Tongarewa (NMNZ M.158254). Type locality: New Zealand, West Norfolk Ridge, Wanganella Bank summit, 32*34.4'S, 167*31.0'E, 113 m, alive, RV 'Tangaroa', 29.i.1981.
Description

  Shell small up to 2.55 mm high, fragile, subcircular, inequivalve of sculture, equilateral, left valve more convex than right valve, auricles nearly equal in size (posterior slightly larger)and shape and sculpture continuous with disc, unbonal area opaque white, few irregular, opaque white radial streaks on both valves, elsewhere colourless and tanslucent.

  Left valve disc and auricles sculptured with widely spaced commarginal lamellae and very weak radial threads.Right valve with outer layer of commarginally elongate, hexagonal prisms. Byssal notch of moderate depth, byssal fasciole rather broad. Internal riblets lacking.

Distribution

 

NW North Island, New Zealand (TL)

Habitat   Living bathyally from rhodolith gravel.