Lampra parvula Hickson & Gravely, 1907: 17, pl. 3 figs 15, 16, pl. 4 fig. 35; Ritchie, 1913: 10, 14; Dayton et al., 1970: 247, 254.
Monocaulus parvula — Svoboda & Stepanjants, 2001: 64 –65, figs 2e, f.
Remarks. Apparently, there is a mistake in the labels of Z. parvula in Svoboda & Stepanjants (2001). What is labeled Monocaulus microrhiza seems to correspond to Z. parvula and what is labeled M. parvula to a species of Corymorpha, perhaps C. microrhiza.
Distribution. Circum-Antarctic (Stepanjants 1979). In the Ross Sea, known from McMurdo Sound (Hickson & Gravely 1907; Ritchie 1913; Dayton et al. 1970) and off Cape Royds (Ritchie 1913).