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"Gelatinous substance of the disc of Aurelia, showing-a, fibrous trabeculae, and b, wandering endoderm cells, with amaebold movements." — Encyclopedia Britannica, 1893

Aurelia

"Gelatinous substance of the disc of Aurelia, showing-a, fibrous trabeculae, and b, wandering endoderm…

"Development of Aurelia. Above to the left, young scyphistoma with four perradial tentacles. Below to left, scyphistoma with sixteen tentacles and first constriction. To the right, strobila condition of the scyphistoma, consisting of thirteen metameric segments; the uppermost still possesses the sixteen tentacles of the scyphistoma; the remainder have no tentacles, but are ephyrae, each with eight bifid arms. each segment when detached becomes an ephyra." — Encyclopedia Britannica, 1893

Aurelia

"Development of Aurelia. Above to the left, young scyphistoma with four perradial tentacles. Below to…

"Surface view of the sub-umbrella or oral aspect of Aurelia aurita, to show the position of the openings of the sub-genital pits, GP. In the center is the mouth, with four perradial arms corresponding to its angles. The four sub-genital pits are seen to be interradial. x indicates the outline of the roof of a sub-genital pit; y, the outline of its floor or oral limit, in which is the opening." — Encyclopedia Britannica, 1893

Aurelia Aurita

"Surface view of the sub-umbrella or oral aspect of Aurelia aurita, to show the position of the openings…

"Half of the lower surface of Aurelia aurita. The transparent tissues allow the enteric cavities and canals to be seen through them. a, marginal lappets hiding tentaculocysts; b, oral arms; v, axial or gastric portion of the enteric cavity; gv, radiating and anastomosing canals of the enteric system; ov, ovaries." — Encyclopedia Britannica, 1893

Aurelia Aurita

"Half of the lower surface of Aurelia aurita. The transparent tissues allow the enteric cavities and…

"Tentaculocyst and marginal lappets of Aurelia aurita. In the lefthand figure-ML, marginal lappets; T, tentaculocyst; A, superior or aboral surface, magnified about 50 diameters. In the right-hand figure-A, superior or aboral olfactory pit; B, inferior or adoral olfactory pit; H, bridge between the two marginal lappets forming the hood; T, tentaculocyst; End, endoderm; Ent, canal of the enteric system continued into the tentaculocyst; Concendodermal concretion; oc, ectodermal pigment (ocellus). The drawing represents a section, taken in a radial vertical plane so as to pass through the long axis of the tentaculocyst." — Encyclopedia Britannica, 1893

Aurelia Aurita

"Tentaculocyst and marginal lappets of Aurelia aurita. In the lefthand figure-ML, marginal lappets;…

"Sense-epithelium cell of Aurelia." — Encyclopedia Britannica, 1893

Epithelium

"Sense-epithelium cell of Aurelia." — Encyclopedia Britannica, 1893

"Portions of sections through the disc of medusae. The upper one of Lizzia, the lower of Aurelia. el, endoderm lamelia, or vascular lamelia; m, muscular processes of the ectoderm cells in cross section; d, ectoderm; en, endoderm lining the enteric cavity; e, wandering endoderm cells of the gelatinous substances." — Encyclopedia Britannica, 1893

Medusae

"Portions of sections through the disc of medusae. The upper one of Lizzia, the lower of Aurelia. el,…