| Type | Diagnosis | ||||||
| Language | English | ||||||
| ISO 639-3 | eng | ||||||
| Note | Hydroid with an oral whorl of up to ten capitate tentacles, without aboral filiform tentacles; medusae buds carried in clusters on short blastostyles (gonostyle) or singly at base of hydranth. Medusae adapted for crawling, unable to swim; umbrella with or without continuous ring of nematocysts along margin; with four or more simple and short radial canals; manubrium with broad base, conical, with simple circular mouth; with or without brood-chamber above base of stomach; gonads either on manubrium, or in brood-chamber from where they can also extend to the epidermis of the subumbrella; 6-14 bifurcated marginal tentacles, one upper branch with a single terminal nematocyst knob, one lower branch | ||||||
| Source | Schuchert, P. 2006a. The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Capitata Part 1. Revue suisse de Zoologie 113: 325-410. available online at http://www.biodiversitylibrary.org/item/128494#page/101/mode/1up | ||||||
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