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"Cunina rhododactyla, one of the Narcomedusae. c, circular canal; h, "otoporpae" (ear-rivets) or centripetal process of the marginal cartilaginous ring connected with tentaculocyst; k, stomach; l, jelly of the disc; r, radiating calan (puch of stomach); tt, tentacles; iw, tentacle root. The lappets of the margin of the disc, separated by deep notches, above which (nearer the aboral pole) the tentacles project from the disc (not marginal therefore), are characteristic of many Narcomedusae and Trachomedusae. Cartilaginous strands (the mantle rivets or peroniae) connect the tentacle root with the solid marginal ring." — Encyclopedia Britannica, 1893

Cunina Rhododactyla

"Cunina rhododactyla, one of the Narcomedusae. c, circular canal; h, "otoporpae" (ear-rivets) or centripetal…