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Sarepta tellinaeformis Hedley, 1901

Description: Shell large for family. Shape: equivalve, equilateral, ovate, with umbo located near midline; both anterior and posterior ends rounded; umbo projecting above hingeline. Hinge taxodont, up to 15 teeth on shorter (anterior) side, up to 18 on longer (posterior) side. Chrondrophore broad, shallow. Interior smooth, non-nacreous, muscle scars and pallial line apparent on some but not all specimens, margin smooth. Exterior smooth. Periostracum thin, fawn, flaking, with fine concentric ridges. Exterior shell colour white, translucent.

Size: Up to 10 mm in length.

Distribution: NSW southwards to SA, including Tas.

Habitat: NSW specimens have been taken in 75-176 m but Cotton (1961) gave the depth of SA specimens as 300 fathoms (549 m). Uncommon.

Fig. 1: 5.57.5 miles (812 km) NE of Cape Three Points, NSW, in 75?91 m (C.013244)

Fig. 2: Detail of hinge and muscle scar, from Hedley (1901)

Copyright Des Beechey 2023