Spondylus raoulensis W. R. B. Oliver, 1915
OLIVER, W. R. B. 1915. The Mollusca of the Kermadec Islands. Transactions and Proceedings of the New Zealand Institute, 47: 509-568, pls. 11, 12. [p. 553, pl. 12, fig. 49]
1915 Spondylus raoulensis W. R. B. Oliver, 1915
1915 Spondylus iredalei Fulton, 1915
1915 Spondylus iredalei Fulton, 1915
W. R. B. Oliver, 1915, plate 12.
|
«Description of Type Specimen.— Right valve attached to rock, irregular, very deep at apex. Hinge-line straight, sides expanding at first gradually then suddenly, forming a nearly circular outline. Planes of hinge area and margin at right angles, contour of margin viewed laterally convex. Hinge area triangular, slightly concave, sides sinuous. Hinge-teeth projecting, with a deep cartilage-pit between them. Sculpture: Hinge area smooth, surface in contact with rock rough and irregular, otherwise with indistinct radiating ribs and concentric growth-lines. Colour pink; purplish on the angles of the hinge area ; apex and hinge area mostly white.
Diameter — Dorso-ventral, 63 mm.; ant.-post., 54 mm. Hinge area — Base, 30 mm.: height, 27 mm. Left valve (of another specimen) irregular, shallow. Cartilage - pit narrow, triangular, formed by two raised ridges on hinge-plate converging at apex. Hinge-teeth high, rounded, their dorsal face overhanging a marginal groove. Sculpture: There are 12 prominent but irregular radiating ridges, of which 6 high ones alternate with (3 lower ones. The interspaces with close, wavy, lamellated. radiating ribs, slightly irregular in size. Colour pink, darker on the ridges and ears. Diameter — Dorso-ventral, 73 mm. ; ant.-post., 72 mm. Variations from Type.— Large shells are massive and heavy. The angle of the planes of hinge area and margin increase with age. The colour varies, some shells being entirely purplish, others with much yellowish diffused with pink, but the ears and angles of the hinge area are usually purplish. Large right valve: Diameter — dorso-ventral, 125 mm.; ant.-post., 98 mm. Angle of planes of hinge area and margins, 135°. The hinge area varies in, outline, and the apex points either forward or backward. Young specimens have spines on the ridges; these are probably worn off the types, which are beach specimens. Habitat.— Single valves, often of large size, commonly washed up on the beaches, Sunday Island. A fragment of pumicestone with a small live shell attached was dredged in 25 m. off Sunday Island by R. S. Bell. Fossil.— Common in hard sandv tuffs of submarine origin, Deyrell Islet. (S. ostreoides Oliver, Trans. N.Z. Inst,, 43, 527.)» WALTER REGINALD BROOK OLIVER, 1915
|
«Description
Supplementary to that of Oliver (1915). Prodissoconch 230 μm long, ovate, hinge line straight, moderately inflated, smooth. Distribution
Raoul and Macauley islands, Kermadec Islands, 0-113 m; taken alive at 15-30 m (Fig. 69). Remarks
Spondylus raoulensis is common at the Kermadec Islands, where it appears to be a restricted endemic. Attaining 130 mm in height, it is the largest spondylid in the New Zealand region.» DIJKSTRA, H. H. & B. A. MARSHALL. 2008. The recent Pectinoidea of the New Zealand region (Mollusca: Bivalvia: Propeamusiidae,Pectinidae and Spondylidae). Molluscan Research, 28 (1): 1-88, figs. 1-70. [p. 79]
|
Spondylus raoulensis Oliver, 1915; H. H. Dijkstra & B. A. Marshall, 2008, The recent Pectinoidea of the New Zealand region, figures 68A-68D, 68F.
|