PECTINIDAE

Aequipecten commutatus peripheralis

Dijkstra & Kilburn, 2001

Figure

 

Holotype (lv)

Original name  Aequipecten commutatus peripheralis Dijkstra & Kilburn, 2001
Autoreference   Dijkstra & Kilburn, 2001: 307, figs 46-48.
Reference   Dijkstra, H.H., & R.N. Kilburn, 2001. The family Pectinidae in South Africa and Mozambique (Mollusca: Bivalvia: Pectinoidea). - African Invertebrates 42: 263-321.
Type data   Holotype (lv: H 19.4 mm, L 18.4 mm) Natal Museum at Pietermaritzburg (NMSA E8964). Type locality: South Africa, Zululand, off Matigulu River mouth, 29*21.9'S, 31*56.2'E, 200-220 m, dead, mud, coarse sand and Dendrophyllia, 16.vi.1989 (NMDP stn ZR9).
Description

  Shell up to ca. 20 mm high, rather compressed, higher than wide, subcircular, nearly equivalve, inequilateral, posteriorly obliquely ovate, right valve somewhat more convex than left valve, auricles slightly unequal in size, umbonal angle ca. 90 degrees, colour creamy with white and orange spots and streaks (V-shaped markings), right valve paler.

  Valves sculptured with 19 radial costae, solid and nearly smooth, anteriorly and posteriorly secondary 3-4 radial riblets, intercostal commarginal lamellae. Auricles with 7 scaly radial riblets. Byssal notch obsolete, byssal fasciole rather small. Functional ctenolium on suture (3-5 teeth).

Distribution

 

South Africa (TL)

Habitat  Shells bathyally on soft sediments.