Solmundaeginidae

Diagnosis: Narcomedusae with manubrial pouches interradial, divided into two to four parts; gonads in these pouches; exumbrellar, primary tentacles between marginal lobes; without a peripheral canal system; with two or four primary tentacles leaving umbrella in apical half, well above level of stomach pouches; tentacle roots acutely recurved orally; no nematocystladen, deep peronial grooves; with peronia, equal or twice as many in number as the primary tentacles; without secondary tentacles on umbrella margin but with rudimentary bulbs; with or without nematocyst patches covering exumbrella. Represented by the genera Solmundaegina, Solmundella, Aeginopsis, and Solmundus (Lindsay et al., 2017).

Remarks: When splitting the former Family Aeginidae, Lindsay et al. (2017) proposed this new family name based on their new genus Solmundaegina and included also the other genera listed above. They may have overlooked that by including the genus Solmundus Haeckel, 1879 there is already a family level name for this group available, namely the subfamily Solmundinae Haeckel, 1879, which is also valid at the family level as Solmundidae Haeckel, 1879. However, we agree with Lindsay et al. (2017) that the type species of Solmundus (S. tetralinus Haeckel, 1879) is a doubtful species, perhaps an aberrant Solmundella bitentaculata with four tentacles. Family names should not be based on dubious genera and species and it is advisable to remove Solmundus from the Solmundaeginidae.