Myodocopid ostracods collected on cruise 11 of the RV Anton Bruun to the Peru-Chile Trench in 1965 are described, including four new species. Also described are two new species of the genus Spinacopia from Antarctica collected in 1964 on cruises 11 and 12 of the RV Eltanin. A supplementary description is given of the holotype of Azygocypridina imperator (Brady, 1880), the type-species of the genus.
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