Kramp, P.L., 1939. Occasional notes on Coelenterata. III. Meddr dansk naturh. Foren. 103 : 503-516.
page(s): 511 [details]
basis of record
van der Land, J.; Vervoort, W.; Cairns, S.D.; Schuchert, P. (2001). Hydrozoa, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 112-120 (look up in IMIS) [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Hydroids colonial, stolonal or branching, covered by perisarc infested with foreign material; filmy perisarc also envelops hydranth body and basal part of tentacles; hydranths with one whorl of filiform tentacles; gonophores arise singly from hydranth pedicels, liberated as free medusae.
Medusa with eight clusters of marginal tentacles, all tentacles similar in structure; with or without ocelli; with four dichotomously branching oral tentacles; gonads in perradial or adradial position. [details]