Epimeria of the Southern Ocean with notes on their relatives (Crustacea, Amphipoda, Eusiroidea) Author d’Acoz, Cédric d’Udekem Royal Belgian Institute of Natural Sciences, Service Heritage, Rue Vautier 29, B- 1000 Brussels, Belgium. & Corresponding author: cdudekem @ naturalsciences. be cdudekem@naturalsciences.be Author Verheye, Marie L. Royal Belgian Institute of Natural Sciences, Operational direction Taxonomy and Phylogeny, Rue Vautier 29, B- 1000 Brussels, Belgium. & Email: mverheye @ naturalsciences. be mverheye@naturalsciences.be text European Journal of Taxonomy 2017 2017-10-17 359 1 553 journal article 21844 10.5852/ejt.2017.359 87920495-c1bf-4bdb-b153-50e709c1d6c2 2118-9773 3855694 703F4B1F-DFAD-47DD-AEA5-9E31A1921508 Alexandrella mixta Nicholls, 1938 s. lat. Fig. 336 Parandaniexis mixtus Nicholls, 1938: 42 , fig. 22. Pseudandaniexis mixta – Nicholls 1938 : corrigendum. — J.L. Barnard 1958: 127 . — Bellan-Santini 1972: 229, pl. 36. Alexandrella mixta – Holman & Watling 1983: 39 –41 , fig. 5. Alexandrella dentata – Berge & Vader 2005a: 1332 –1335 , figs 2, 3. — Rauschert & Arntz 2015: 79 , pl. 72 [ANT-XXI/2, stn 233, 200 m , 13 mm ]. Material examined RV Polarstern cuises SOUTHERN OCEAN: 1 spec. , cruise PS69,ANT-XXIII/8, stn 725-6, Larsen A, 64°54.80ʹ S , 60°37.46ʹ W to 64°54.80ʹ S , 60°38.28ʹ W , 105–207 m , amongst large grey hexactinellid sponges, Agassiz trawl, 22 Jan. 2007 , coll. C. d’Udekem d’Acoz and H. Robert ( RBINS , INV . 122305). Distribution Adélie Coast , Weddell Sea; 60–1543 m ( De Broyer et al. 2007 as A. dentata , excluding type record). Biology One specimen identified as Alexandrella mixta was found by the first author amongst large grey hexactinellid sponges and its colour pattern matched perfectly with that of these sponges (fig. 338). Some kind of symbiosis might be involved. Remarks See account on A. dentata for the taxonomic history of A. mixta .