Not stated, but evidently H. pseudouncinata was named because it represents one of the taxa previously confounded ... [details]
Hydroides affinis was previously annotated as a nomen oblitum in WoRMS. However, reversal of precedence (Art.23.9) ... [details]
Hydroides pseudouncinata is not given a full entry of its own or a description in Zibrowius (1968) but it is ... [details]
Zibrowius (1971) separated off subspecies 'africana' for the first time, and describes nominal subspecies ... [details]
Zibrowius (1971) placed Hydroides affinis under Hydroides helmata (Iroso, 1921), the better known name, however H. ... [details]
Zibrowius (1968:109) treated H. uncinata as valid when he described his new taxon H. pseudouncinata, but later ... [details]
Zibrowius (1968: 159) questionably refers this taxon to Spirobranchus lima [details]