Taxon classification Animalia Mysida Mysidae

Genus Gastrosaccus Norman, 1868

Gastrosaccus Norman, 1868: 438.

Acanthocaris Sim, 1872: 185.

Pontomysis Czerniavsky, 1882: 77.

Type species.

Mysis spinifera Goës, 1864; by monotypy.

Remarks.

Norman (1868) instituted the genus Gastrosaccus to accommodate mysid specimens having a characteristic formation of marsupium, for which the pleura of the female first abdominal somite are greatly expanding as to support the oostegites. When establishing Gastrosaccus, Norman actually intended to place Mysis spinifera Goës, 1864, in the genus but he mistakenly referred his specimens to Mysis sancta van Beneden, 1861 because he first thought that Mysis spinifera could be a synonym of Mysis sancta . This was later corrected by replacing it with Gastrosaccus spinifer (see Norman 1892, Tattersall and Tattersall 1951). The genus currently contains 24 species (Mees and Meland 2013).