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Gadilina insolita (E.A. Smith, 1894)

Description: Shape very slender, moderately curved; apex usually truncated, with plug and short pipe. Weight light. Aperture diameter 2.2 x 2.0 mm. Apex diameter 1.25 x 1.1 mm. Sculpture no longitudinal sculpture. Transverse sculpture microscopic growth lines Aperture laterally compressed, oval in cross section. Colour white.

Size: Up to 36.5 mm in length.

Distribution: Global distribution unknown. In Australia, Qld and NSW plus several records from NT.

Habitat: Dredged in sandy mud from 192 to 770 m (Lamprell & Healy, 1998). Uncommon.

Comparison: This species is longer and more slender than Episiphon virgula, and plain white in colour. The aperture is compressed in this species, but circular in E. virgula.

Synonymy: This species was previously known as Episiphon jamiesoni Lamprell & Healy, 1998, but according to WoRMS, that name is a synonym of Gadilina insolita (E.A. Smith, 1894).

Fig. 1:  a. Whole shell, not truncated. Off Cairns, Qld, in 668613 m (C.173422, specimen 1). b. Apex of truncated shell showing plug and short pipe. Off Cairns, Qld, in 668613 m (C.173422, specimen 2).


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