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4776-1.jpg (64502 bytes)



Pendroma sp.

Description: Shell minute, thin and fragile, with rounded whorls. Protoconch initially smooth, then with netted pattern. Teleoconch up to 2½ whorls, at first continuing netted pattern of protoconch, then with strong, thin, irregularly spaced axial ribs crossed by fine spiral threads, about 7 on second-last whorl and 20 on last whorl. Aperture expanded sideways and anteriorly, peristome incomplete; outer lip thin, inner lip a little reflected over umbilicus. Umbilicus partly or almost completely closed. Colour opaque white.

Size: Up to 2.2 mm in height.

Distribution: Known from 5 specimens from off Sydney, southwards to off Nowra, NSW.

Habitat: Subtidal, 800-1200 m.

Synonymy: Warén (1991) noted that this may be conspecific with Pendroma peplexa Dall, 1927, from off Rio de la Plata, Argentina.

Remarks: SEM images of the protoconch and shell were given by Warén (1991).

Fig. 1: 4776-1 Off Sydney, 1106-1143 m (C.215183)


Copyright Des Beechey 2009