original description
Haeckel, E. (1879). Das System der Medusen. Erster Teil einer Monographie der Medusen. <em>Denkschriften der Medicinisch-Naturwissenschaftlichen Gesellschaft zu Jena.</em> 1: XX+1-360, 320 plates., available online at https://www.biodiversitylibrary.org/page/32605578
page(s): 247 [details]
original description
(of Petachinidae Haeckel, 1879) Haeckel, E. (1879). Das System der Medusen. Erster Teil einer Monographie der Medusen. <em>Denkschriften der Medicinisch-Naturwissenschaftlichen Gesellschaft zu Jena.</em> 1: XX+1-360, 320 plates., available online at https://www.biodiversitylibrary.org/page/32605578
page(s): 247 [details]
basis of record
Bouillon, J.; Boero, F. (2000). Synopsis of the families and genera of the Hydromedusae of the world, with a list of the worldwide species. <i>Thalassia Salent. 24</i>: 47-296 (look up in IMIS) [details]
From editor or global species database
Diagnosis Trachymedusae with four radial canals; no peduncle and centripetal canals; manubrium well developed; four sac-like gonads on radial canals; marginal tentacles not in clusters, solid, with a terminal club-shaped knob of nematocysts; pendant statocysts. [details]
Status Status problematic as based on species inquirendae. [details]
From editor or global species database