original description
Hand, C.; Hendrickson, J.R. (1950). A two-tentacled, commensal hydroid from California (Limnomedusae, Proboscidactyla). <em>Biol. Bull.</em> 99(1): 74-87., available online at https://doi.org/10.2307/1538753
page(s): 76 [details] Available for editors 
context source (Hexacorallia)
Fautin, Daphne G. (2013). Hexacorallians of the World. (look up in IMIS) [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 Hydroid usually on rim of sabellid polychaete tubes, with creeping, naked stolons; hydranths almost sessile, polymorphic;
gastrozooid with rounded hypostome, separated from body by a constriction; hypostome with large pad of nematocysts somewhat displaced onto one side, two filiform tentacles arising close together beneath hypostomial constriction, opposite to nematocyst pad; gonozooids and dactylozooids without tentacles, mouth-less and smaller than gastrozooids; medusa buds close to gonozooid tip.
Medusa umbrella mostly hemispherical; with exumbrellar nematocyst buttons or bands alternating with tentacles; radial canals branched, obliterated canals some times present; usually instead of circular canal a solid gastrodermal marginal strand; manubrium base with four, six or more radial canals and gastric lobes, extending along proximal portions of radial canals, lobes in some species inconspicuous; gonads surrounding manubrium and extending onto gastric lobes; tentacles hollow, with swollen hollow base connected to the lumen of radial canals.
[details]

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From editor or global species database
Family Proboscidactylidae -Genus Proboscidactyla; typical medusa and polyp