| Corymorpha gigantea | Umbrella “globular, jelly very thick, bell cavity narrow, about half as high as the |
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| (Kramp, 1957)—M | umbrella”; mouth circular; main tentacle “with a well-developed conical basal |
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| bulb”, “very long and thin carrying several bifurcated lateral branches separated |
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| by long intervals; no bulbous swellings in the three other perradii”. Weddel Sea, E |
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| of Falkland Islands, near Tristan da Cunha (Kramp 1959: 89–90) |
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| Corymorpha glacialis | Polyp redescribed by Schuchert (2010: 394–395); gonophores are sporosacs; |
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| M. Sars, 1860—P + G | “gonads and spadix (manubrium) fill sporosac entirely and thus no vestigial |
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| subumbrella present, without subumbrellar musculature and velum”; radial |
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| canals present, ending in 4 “bumps containing nematocysts”. An Arctic species |
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| “penetrating into northern boreal regions” (Schuchert 2010: 396) |
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| Corymorpha gracilis | Prominent, pointed, apical process, as high as umbrella itself, with apical canal; |
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| (Brooks, 1883)—M | main tentacle moniliform, with “up to 7 large, oblong nematocyst clusters”, |
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| occasionally supplemented by “some smaller annular” ones; opposite tentacle well- |
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| developed, filiform; lateral tentacles “reduced to mere cones”. Atlantic coast of |
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| USA, Brazil, South Atlantic (Schuchert & Collins 2021: 277) |
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| Corymorpha groenlandica | Polyp redescribed by Schuchert (2010: 401). Gonophores as “ sporosacs without |
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| (Allman, 1876)—P + G | traces of radial canals, circular canal, or tentacles ”. An Arctic species (Schuchert |
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| 2010: 402) |
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| Corymorpha intergona | Umbrella without apical process; manubrium short, not surpassing 1/3 of the |
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| (Huang, Xu & Guo, 2012)—M | subumbrella; small, lenticular apical chamber; gonads interradial; main tentacle |
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| tapering in proximal part, ending in “large, club-shaped swelling armed with |
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| cnidocysts”; opposite bulb spherical, slightly larger than the lateral ones. South |
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| China Sea (Huang et al. 2012: 520) |
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| Corymorpha interogona | No apical projection; mesoglea very thick; manubrium short, not exceeding half |
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| (Xu & Huang, 2003)—M | the length of the subumbrellar cavity, mouth simple, quadrate; main tentacle |
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| bearing “ over 60 knobs of nematocysts in one row along the abaxial side. Three |
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| other marginal bulbs rudimentary, very small, all alike, without filiform tentacles”. |
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| Taiwan Strait (Xu & Huang 2003: 138, 143) |
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| Corymorpha januarii | Polyp redescribed by Da Silveira & Migotto (1992: 85). Gonophores “released as |
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| Steenstrup, 1855—P + M | reduced free-swimming medusae”; with a dome-shaped apical process with short |
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| apical canal; “with four equal tentacle buds or rudimentary, spur-like marginal |
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| bulbs”; gametes released while the medusae still attached to the polyp. Brazil (Da |
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| Silveira & Migotto 1992: 86–87) |
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| Corymorpha juliephillipsi | Prominent apical projection, with either rounded or pointed tip, with apical canal; |
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| (Gershwin, Zeidler & Davie, | “ main tentacle moniliform, with up to 12 rings plus a teardrop-shaped terminal |
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| 2010)—M | knob; opposite tentacle about twice as long as other two”. Western Australia |
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| (Gershwin et al. 2010: 62) |
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| Corymorpha knides | Apex of umbrella conical, with thick mesoglea; exumbrella with scattered |
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| (Huang, 1999)—M | nematocyst clusters; mouth circular; main tentacle mounted on a large, nearly |
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| spherical bulb, bearing “ over 30 abaxial knobs of nematocysts ”; 3 bulbs |
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| rudimentary, all alike, with no tentacles. Taiwan Strait, Hong Kong (Huang 1999: |
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| 437–438) |
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| Corymorpha luoyuanensis | A well-developed, rounded-conical, apical projection without apical canal and |
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| (Xu, Huang & Yang, 2022)—M | apical chamber; manubrium funnel-shaped, extending beyond velar aperture; |
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| mouth circular; radial canals thick, containing “vacuolate endodermal cells”; |
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| main tentacle thick and “inflexible”, provided with 6–7 adaxial nematocysts knobs, |
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| besides the larger terminal one; 3 perradial, conical-shaped, atentaculate, marginal |
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| bulbs. Fujian, China (Liu et al. 2022: 346) |
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| Corymorpha macrobulbus | No apical projection; manubrium longer than subumbrella, mouth rounded; main |
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| (Xu & Huang, 2003)—M | tentacle with “large, nearly oval bulb and 3–6 very small, spherical” nematocyst |
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| clusters placed abaxially, in addition to the “very large, nearly oval terminal knob”; |
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| a small tentacle bulb opposite to it; 2 lateral, “longer, cone-shaped” bulbs “with |
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| filiform tentacles”. Taiwan Strait (Xu & Huang 2003: 139, 143) |
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