Revision of the lysianassoid genera Acidostoma and Shackletonia (Crustacea: Amphipoda: Acidostomatidae fam. nov.) Author Stoddart, H. E. Author Lowry, J. K. text Zootaxa 2012 2012-05-10 3307 1 1 34 https://biotaxa.org/Zootaxa/article/view/zootaxa.3307.1.1 journal article 10.11646/zootaxa.3307.1.1 1175-5326 5250488 Shackletonia robusta K.H. Barnard, 1931 ( Figs 23–25 ) Shackletonia robusta K.H. Barnard, 1931: 425 . ―K.H. Barnard, 1932: 29 , fig. 3. ―J.L. Barnard, 1958: 99 . ― Thurston & Allen, 1969: 367 . ― Arnaud, 1974: 592 . ― Lowry & Bullock, 1976: 105 . ― Barnard & Karaman, 1991: 529 . ― De Broyer & Jazdzewski, 1993: 75 . ― Wakabara et al ., 1996: 355 (table I). ― Gutt et al ., 2000: 80 . ― De Broyer et al ., 2007: 115 . FIGURE 23. Shackletonia robusta K.H. Barnard , male, 22.4 mm, MV J38209 , Prydz Bay, Antarctica. FIGURE 24. Shackletonia robusta K.H. Barnard , male, 22.4 mm, MV J38209 , Prydz Bay, Antarctica. Scales represent 0.5 mm. FIGURE 25. Shackletonia robusta K.H. Barnard , male, 22.4 mm, MV J38209 , Prydz Bay, Antarctica. Scales represent 1.0 mm. Material examined. 1 male , 22.4 mm, MV J38209 , off Larsemann Hills , eastern Prydz Bay , Antarctica , 68°54.88'S 76°37.03'E , 667 m , epibenthic sled, 18 February 1993 , M. O'Loughlin , stn AA93-158 . — 1 specimen , AAD collection, 230 km north of Shackleton Ice Shelf , Bruce Rise , Australian Antarctic Territory , Southern Ocean , 63°31'10"S 100°51'27"E to 63°30'54"S 100°50'54"E , 1266.79–1274.78 m, beam trawl, 29 December 2009 , Australian Antarctic Division , RSV Aurora Australis , stn BR09 BTC02 . Description. Mandible molar a setose subtriangular flap. Maxilla 1 palp large, 2-articulate, with apical robust setae. Maxilliped inner plate well developed; outer plate without subapical notch. Gnathopod 2 dactylus reaching corner of palm. Pereopods 5 and 6 merus broader than long. Epimeron 3 posteroventral corner produced into a spine. Uropod 1 peduncle dorsolateral margin with more than 10 robust setae. Uropod 2 peduncle dorsolateral margin not castellate, with elongate robust setae. Uropod 3 reaching beyond the end of uropod 2; rami longer than peduncle, with plumose setae; outer ramus article 2 vestigial. Telson much longer than broad, deeply cleft (about 80%). Distribution. South Shetland Island , South Georgia ; Bruce Rise and Prydz Bay, Antarctica ; 230–1275 m depth.