PECTINIDAE

Mirapecten cranmerorum

(Waller, 1986)

Figure

 

Holotype

Original name   Somalipecten cranmerorum Waller, 1986
Autoreference   Waller, 1986: 42, figs 1-9 (holotype), 10-13 (two paratypes)
Reference   Waller, T.R., 1986. A new genus and species of scallop (Bivalvia: Pectinidae) from off Somalia, and the definition of a new tribe Decatopectinini. - The Nautilus 100(2): 39-46, figs 1-13.
Type data   Holotype (H 50.0 mm, L 53.8 mm, D 15.5 mm) National Museum of Natural History, Smithsonian Institution, Washington DC (USNM 859034). Type locality: Off Somalia, 150-300 m, leg. Taiwanese fishermen.
Description

  Shell up to c. 80 mm high, moderately inflated, acline or slightly prosocline, almost equally convex, left valve somewhat more convex than right valve, slightly circular, inequivalve, nearly equilateral, auricles unequal in shape and size, umbonal angle 93-104 degrees, colour red, orange-red, orange or yellowish with whitish maculations.

  Both valves with radial plicae (lv 3 major + 2 minor laterally, rv 4 major), some scales on plicae of left valve, lacking on right valve, radial riblets on plicae and in interspaces near ventral margin. Commarginal microsculpture throughout. Byssal notch weak, byssal fasciole narrow. Functional ctenolium on suture (3-5 teeth). Internal rib plicae, delicate carinated near ventral margin.

Distribution

 

NW Indian Ocean, off Somalia (TL)

Habitat  Living upper bathyally probably in the photic zone on a hardground bottom.