Scaeochlamys livida peroniana Iredale, 1939
IREDALE, T. 1939. Mollusca. Part 1. In Great Barrier Reef Expedition 1928-29, B.M.(N.H.), Scientific Reports, 5 (6): 209-425, pls. 1-7. [p. 354]
«Quoy and Gaimard's illustration is not unlike the New South Wales shell, but the swollen left valve and the flattened right valve and the fewer ribs appear to separate the western form, which must be emphasized on account of the discontinuous distribution. However, the figure given by Wood for his O. tegula is of a shell 2½ in. long and much narrower than high, whereas the local shells are all comparatively broad and have more strong ribs, the figure only showing eight at the most; the Sydney shell has twelve or more ribs. As Wood had West Australian shells at his disposal, the only course open is the designation of King George's Sound, West Australia, as the type locality of Ostrea tegula Wood, and thus dispose of the name. Probably the type is lost. Thus the only possible course is the description of the Eastern Australian shell as Scaeochlamys livida peroniana.
Shell of medium size, subequilateral when young, sometimes distorted when adult, inequivalve; valves with discrepant sculpture, almost as broad as long, coloration variable right valve usually paler than left. The ears are unequal but less so in left than right valve. The sculpture of the right valve, following the umbonal smooth portion, consists of about twenty smooth ribs with slight interstitial scratching; with age intercalating ribs intervene and a slight growth of prickles begins. Very rarely do large scalloped scales appear. On the left valve the sculpture in the adult consists of a few broad ribs bearing large erect scalloped scales, the young valve having begun similarly to the right, but with broader, flatter, fewer ribs, with notable interstitial scratching, and on the ears "Camptonectes" sculpture, and this may sometimes be seen between the ribs in the adult shell on both valves. A medium-sized valve measures 54 mm. in breadth and 54 mm. in length or height, while a large one measures 75 mm. in length or height and 71 mm. in breadth. The type is a Sydney Harbour shell.» TOM IREDALE, 1939
|
Scaeochlamys livida peroniana Iredale, 1939; H. H. Dijkstra, 1983, The Pectinidae of New Caledonia 2. Scaeochlamys livida peroniana Iredale, 1939, page 19.
|