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"Medusiform person, one of the Anthomedusae, detached from a hydroid colony of Syncoryne. Ocelli are seen at the base of the tentacles, and also (as an exception) groups of medusiform buds." — Encyclopedia Britannica, 1893

Anthomedusae

"Medusiform person, one of the Anthomedusae, detached from a hydroid colony of Syncoryne. Ocelli are…

Colonial, plant-like animals closely related to jellyfish, with stinging cells, Any member of the invertebrate order Hydroida (class Hydrozoa, phylum Cnidaria). Hydroids have three basic life-cycle stages: (1) a tiny free-swimming planula larva about 1 mm (0.04 inch) long, which settles and grows into (2) a sessile (attached), usually colonial hydroid stage, which in turn liberates (3) medusa.

Medusa of a Hydroid

Colonial, plant-like animals closely related to jellyfish, with stinging cells, Any member of the invertebrate…

Hydroids, related to the jellyfish, have three basic life-cycle stages: a tiny free-swimming planula larva, which settles and grows into a sessile attached, usually colonial hydroid stage, which in turn liberates medusae. An enlarged portion of a hydroid colony (Hydractinia) showing the nutritive polyp (a), the defensive polyp (b), and the reproductive polyp.

Hydroid Jellyfish

Hydroids, related to the jellyfish, have three basic life-cycle stages: a tiny free-swimming planula…

"Medusiform person (Lizzia), one of the Anthomedusae, detached from a hydroid colony of the family Endendridae. Ocelli are seen at the base of the tentacles, and two medusiform buds on the sides of the manubrium." — Encyclopedia Britannica, 1893

Lizzia

"Medusiform person (Lizzia), one of the Anthomedusae, detached from a hydroid colony of the family Endendridae.…

"A hydroid colony of six polyps; f, feeding polyp; r, reproductive polyp; m, a medusa." —Davison, 1906

Polyp

"A hydroid colony of six polyps; f, feeding polyp; r, reproductive polyp; m, a medusa." —Davison,…

"Medusiform person (Sarsia), one of the Anthomedusae, detached from a hydroid colony of the family Corynidae. b, the long manubrium, bearing (as an exception) medusiform buds; a, mouth." — Encyclopedia Britannica, 1893

Sarsia

"Medusiform person (Sarsia), one of the Anthomedusae, detached from a hydroid colony of the family Corynidae.…