"Tentaculocyst and marginal lappets of Aurelia aurita. In the lefthand figure-ML, marginal lappets;…
"Carmarina (Geryonia) hastata, one of the Trachomedusae. a, nerve-ring; a', radial nerve; b, tentaculocyst;…
"Diagram of a vertical section through a young Cunina rhododactyla, passing on the right side through…
"Simple tentaculocyst of one of the Trachomedusae (Rhopalonema velatum). The process carrying the otolith…