29. Antimargarita dulcis (E. A. Smith, 1907) [Figs 12E–G]

Valvatella dulcis E. A. Smith, 1907: 10, pl. 2, fig. 8

Material examined. • 2 spms, Stn. 2.

Type locality. McMurdo Sound (Ross Sea), 238 m depth.

Bathymetric distribution. 22–731 m.

Substrate. Soft bottom.

Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.

Remarks. Please note the distinction to the similar species Antimargarita bentarti Aldea, Zelaya & Troncoso, 2009 and Antimargarita powelli Aldea, Zelaya & Troncoso, 2009, which were identified by Aldea et al. (2009). Antimargarita dulcis has characteristic strong spiral cords and a fine dense axial sculpture. Our specimens come from the Fildes Strait with a depth of 70 m. It was not previously known from Maxwell Bay, but has been observed in neighbouring Admiralty Bay.

References. Egorova (1982), Arnaud et al. (1986), Dell (1990), Hain (1990), Numanami (1996), Engl (2012).