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7648-1.jpg (504853 bytes)

 

 

Poroleda spathula Hedley, 1915

Description: Shape equivalve, inequilateral, very elongate so as to appear scythe-like. Anterior end rounded, posterior drawn out into long rostrum; posterior dorsal margin concave. Umbo at anterior quarter, small. Hinge taxodont, with about 12, V-shaped teeth on anterior side and 15?18 flat teeth spread along half length of shell on posterior side. Interior smooth apart from a central dividing ridge near end of rostrum. Exterior with fine, regular concentric ridges and coarse growth lines dorsally. Shell translucent white or pale green with thin fawn periostracum.

Size: Up to 18 mm in length.

Distribution: Cape Moreton, Qld, southwards and around southern Australia to south-western WA, including Tas.

Habitat: Subtidal, 70-550 m. Moderately common.

Comparison: See Poroleda ensicula

Synonymy: Poroleda flindersi Iredale 1929 is a previously established synonym, based on a specimen from off Cape Borda, SA, described as having fine radial sculpture.

Fig. 1: 7648-1 Northeast of Cape Moreton, Qld, 115-124 m. (C.304580)

 
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