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Tubercliopsis macalpinei (Laseron, 1951)

Description (based on syntypes): Shell medium size for family, broadly conical, spire slightly convex in outline. Protoconch of 4 whorls, smooth, with distinct junction with teleoconch. Teleoconch whorls moderately convex with suture indistinct; 3 spiral cords per whorl with interspaces about equal to width of cords; spiral 4 slightly exposed above suture on all whorls. Spirals crossed by axial ribs, forming prominent beads at intersections, strong in interspaces between spirals; about 16 ribs on last whorl. Last whorl with spiral 4 level with top of aperture, weaker than other spirals. Base concave, smooth. Outer lip thin, expanded. Anterior canal a deep U-shaped notch. Shell translucent, mid-brown.

Size: Largest syntype 3.2 mm in length.

Distribution: Syntypes from Bronte Beach, Sydney, NSW. No further specimens available.

Habitat: Unknown.

Fig. 1: Bronte Beach, Sydney, NSW (C.102740 SYNTYPE 1)

Fig. 2: Bronte Beach, Sydney, NSW (C.102740 SYNTYPE 2)


Copyright Des Beechey 2016