Russell, F.S., 1953. The medusae of the British Isles. Anthomedusae, Leptomedusae, Limnomedusae, Trachymedusae and Narcomedusae. : 1-530, pls. 1-35. [details] Available for editors
context source (Bermuda)
Fewkes, J. W. (1883). On a few medusae from the Bermudas. Bulletin of the Museum of Comparative Zoology, 11: 79-90 [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Medusa manubrium short; no gastric peduncle; no excretory pores; four simple radial canals; marginal tentacles hollow, with lateral cirri; no marginal cirri; gonads on radial canals, not reaching manubrium; 4, 8, 12 or more statocysts when adult; no ocelli.
Hydroid colony stolonal or erect sympodial; hydrotheca pedicellate, elongate, everted-conical to bell-shaped, with diaphragm; operculum conical, formed either by many triangular plates in embayments of hydrothecal margin and demarcated from hydrothecal wall by crease line, or pleated continuation of the hydrothecal wall; hydrothecae in old specimens often reduced to a collar-shaped sheath around hydranth base; with or without intertentacular web; gonophores free medusae, gonothecae peduncled. [details]
Taxonomic remark Family scope sensu Russell, not Bouillon [details]