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6986-1.jpg (113068 bytes)


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Seila nigrofusca Laseron, 1951

Description (based solely on holotype): Shell medium to large for the family, broadly conical, spire slightly convex. Protoconch of 2 smooth whorls. Teleoconch whorls straight sided, sculptured with 3 strong, smooth spiral cords with a weaker spiral 4 below. Interspaces between spirals with fine axial threads. Base with a further spiral, then concave and smooth below. Outer lip of aperture thin; inner lip lightly calloused. Anterior canal a deep U-shaped notch. Colour fawn, with summits of spirals light brown and interspaces darker.

Size: Holotype 6.0 mm in length.

Distribution: Holotype from Kurnell, Botany Bay, NSW. Other specimens identified by the current author as this species with only a moderate degree of confidence (11 lots) from Port Stephens, Sydney Harbour, Middle Harbour and Manly Beach.

Habitat: Unknown.

Comparison: See S. atkinsoni.

Fig. 1: 6986-1 Kurnell, Botany Bay, NSW (C.102724 HOLOTYPE)

Fig. 2: 6987-1 Protoconch of specimen identified by the current author as S. nigrofusca. Balmoral Beach, Middle Harbour (C.495954)


Copyright Des Beechey 2016