Genus Zygocanna Haeckel, 1879

Zygocanna Haeckel, 1879: 214,

type species Aequorea pleuronata Péron & Lesueur, 1810 (Kramp, 1961) .

Zygocannota Haeckel, 1879: 215,

type species Aequorea purpurea Péron & Lesueur, 1810 by monotypy.

Zygocannula Haeckel, 1879: 216,

type species Aequorea undulosa Péron & Lesueur, 1810 by designation of Mayer (1910: 339).

Diagnosis: Medusa manubrium wide, no gastric peduncle, subumbrella with or without radial rows of gelatinous papillae. With more than 16 radial canals, at least some branched, new radial canals develop centrifugally from stomach base. Tentacle bulbs usually with excretory papillae. Gonads on radial canals, separated from manubrium.