| Summary: | Macrostylis matildae n. sp. (Figs 11–20) urn:lsid:zoobank.org:act:CBDDFFA0-5539-4540-B04E-AA9CA1D695A5 Etymology. The name “ matildae ” is the latinized genitive case of “Matilda”, an Old German given name meaning “powerful battler”. It is derived from “Maud”, another variant of the same name, as in Maud Queen consort of Norway (1869–1938), spouse of King Haakon VII. This name is ment to reflect on the type locality seamount Maud Rise and the adjacent Norwegian claim of Antarctica, Queen Maud Land (Norwegian: Dronning Maud Land). Type fixation. Holotype (Fig. 11): non-ovigerous female, 1.7 mm, ZMH K-43000, designated here. Type material examined. Holotype: non-ovigerous female used for habitus illustrations, 1.7 mm, ZMH K- 43000. Paratypes (all from same sample as holotype): 1 ovigerous female with eggs used for habitus illustrations, 2.0 mm, ZMH K-43002; 1 non-ovigerous female dissected for illustrations, 1.9 mm, ZMH K-43003; 1 nonovigerous female used for SEM, ZMH K-43005; 1 adult male, dissected for illustrations, ZMH K-43004; 1 manca male, dissected for illustration ZMH K-43001; 29 specimens from the type locality: 6 ovigerous females with no eggs; 14 non-ovigerous females; 1 female manca ZMH; 1 manca male ZMH K-43006. Type locality. Collected 04th January 2008 from the slope of the seamount Maud Rise. This is located off Queen Maud Land on the Antarctic continental slope. Samples were taken during the ANDEEP-SYSTCO project with R/V Polarstern , station ANTXXIV-2 039–17: start trawl at 64° 28.77’ S, 2° 52.69’ E; 2,152 m depth; end trawl at 64° 28.66’ S, 2° 53.14’ E; 2,153 m depth. Diagnosis. Body and all external appendages covered with furry coat of cuticular setules. Pereonites 3–4 ventral spines present. Pereonite 4 posterolateral margins produced posteriorly, rounded. Female pereonite 6 length clearly larger pereonite 5 length. Pereonite 7 ventral spine small; posterolateral margins similar in female and male. Pleotelson shape similar in both sexes, narrowing evenly towards uropod insertions, lateral ...
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