Genus Meganema Fraser, 1939b

Keratosum Hargitt, 1909: 379 .

Meganema Fraser, 1939b: 60 [invalid junior homonym of Meganema Conrad, 1868 (Mollusca)].

Type species. Meganema claviformis Fraser, 1939b, by monotypy.

Current status. Invalid.

Remarks. Meganema Fraser, 1939b: 60 is an invalid junior homonym of Meganema Conrad, 1868: 267 (Mollusca) . It has been regarded as a junior synonym of Lafoeina M. Sars, in G.O. Sars, 1874 by some authors (e.g., Fraser 1947a: 239) and of Keratosum Hargitt, 1909 by others (e.g., Calder 1991: 10). Keratosum has been included as a junior synonym of Lafoeina in some works (e.g., Schuchert 2001a: 59; WoRMS), but the two genera are considered distinct here based on differences in gonophore type and colony form. Actual junior synonyms of Keratosum include Levinsenia Hadži, 1917 [not Levinsenia Mésnil, 1897 (Polychaeta) or Levinsenia Stossich, 1899 (Trematoda) or Levinsenia Bale, 1915 (Hydrozoa)] and Eupoma Stechow, 1920 . With synonyms available, it seems unnecessary to provide a replacement name for the junior homonym of Fraser.