CYCLOCHLAMYDIDAE

Cyclochlamys delli

Dijkstra & Marshall, 2008

Figures

 

                         Holotype (lv)                                    Paratype (rv)                           

Original name  Cyclochlamys delli Dijkstra & Marshall, 2008
Autoreference   Dijkstra & Marshall, 2008: 26, figs 23A-F, 24.
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 3.60 mm) Museum of New Zealand Te Papa Tongarewa (NMNZ M.155920). Type locality: New Zealand, SE South Island, off Otago Peninsula, head of Karitane Canyon, 45*38.5'S, 171*05.0'E, 530-585 m, alive, RV 'Acheron', 19.iii.1976.
Description

  Shell small up to 5 mm high, fragile, subcircular, wider than high, inequivalve, left valve slightly more convex than right valve, inequilaterial, slightly oblique posteriorly, auricles unequal in size, umbonal angle ca. 110 degrees, opaque white in umbonal area, elsewhere translucent and colourless.

  Left valve sculptured with widely spaced commarginal lamellae and delicate radial sculpture nearly obsolete. Right valve with outer layer of commarginally elongate, hexagonal prisms. Byssal notch of moderate depth, byssal fsciole rather broad. Internal riblets lacking.

Distribution

 

SE South Island, New Zealand (TL)

Habitat   Living bathyally on soft bottom assemblages.