Cyclocardia antarctica (E. A. Smith, 1907 )

13. Cyclocardia antarctica (E. A. Smith, 1907) [ Figs 7D–E View FIGURE 7 ]

Cardita antarctica E. A. Smith, 1907: 2 View in CoL , pl. 2, figs 15, 15a

Material examined. • 1 spm, Stn. 3; • 5 spms, Stn. 6; • 67 spms, Stn. 7; • 45 spms, Stn. 8; • 72 spms, Stn. 11; • 1 spm, Stn. 13; • 6 spms, Stn. 14; • 51 spms, Stn. 15.

Type locality. “Near the Antarctic Circle” from 465 m depth.

Bathymetric distribution. 0–1674 m, but usually in shallower depths.

Substrate. Soft bottom.

Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: Kerguelen Islands, Bouvet Island. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.

Remarks. Until recently the species was identified as C. astartoides (E. von Martens, 1878) , which falls into the synonymy of Cardita astartoides Deshayes, 1858 (see MolluscaBase 2025). We observed C. antarctica in depths between 35 and 100 m. The species is already known from the Maxwell and Admiralty Bays.

References. Nicol (1966), Arnaud et al. (1986), Dell (1990), Rauschert (1991), Absher & Feijó (1998), Troncoso et al. (2001), Narchi et al. (2002), Aldea & Troncoso (2010a), Engl (2012), Huber (2015).