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"An expanded Alcyonarian zooid, showing the mouth surrounded by eight pinnate tentacles. st, Stomodaeum in the center of the transparent body; m, messenteries; asm, asulcar mesenteries; B, spicules, enlarged." — The Encyclopedia Britannica, 1910

Alcyonarian

"An expanded Alcyonarian zooid, showing the mouth surrounded by eight pinnate tentacles. st, Stomodaeum…

"Transverse section of an Alcyonarian zooid. mm, Mesenteries; mb, muscle banners; sc, sulcus; st, stomodaeum." — The Encyclopedia Britannica, 1910

Alcyonarian

"Transverse section of an Alcyonarian zooid. mm, Mesenteries; mb, muscle banners; sc, sulcus; st, stomodaeum."…

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied to them about a century ago by Ellis, one of the most celebrated investigators of the department of natural history to which they belong, who remarks that 'their tentacles, being disposed in regular circles, and tinged with a variety of bright lively colors, very nearly represent the beautiful petals of some of our most elegantly fringed and radiated flowers, such as the carnation, marigold, and anemone.'" — Chambers' Encyclopedia, 1875

Anemone

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied…

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied to them about a century ago by Ellis, one of the most celebrated investigators of the department of natural history to which they belong, who remarks that 'their tentacles, being disposed in regular circles, and tinged with a variety of bright lively colors, very nearly represent the beautiful petals of some of our most elegantly fringed and radiated flowers, such as the carnation, marigold, and anemone.'" — Chambers' Encyclopedia, 1875

Anemone

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied…

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied to them about a century ago by Ellis, one of the most celebrated investigators of the department of natural history to which they belong, who remarks that 'their tentacles, being disposed in regular circles, and tinged with a variety of bright lively colors, very nearly represent the beautiful petals of some of our most elegantly fringed and radiated flowers, such as the carnation, marigold, and anemone.'" — Chambers' Encyclopedia, 1875

Anemone

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied…

"Sea anemone dissected; c, tentacles; d, mouth; e, stomach; white lines above k, the mesenteries." —Davison, 1906

Anemone

"Sea anemone dissected; c, tentacles; d, mouth; e, stomach; white lines above k, the mesenteries." —Davison,…

"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…

"Portion of epithelium from the tentacle of an Actinian, showing three supporting cells and one sense cell (sc); 2, a enidoblast with enclosed nematocyst from the same specimens; 3 and 3, two forms of gland cell from the stomodaeum; 5a and 5b, epithelio-muscular cells from the tentacle in different states of contraction; 5c, an epithelio-muscular cell from the endoderm, containing a symbiotic zooxanthelia; 6, a ganglion cell from the ectoderm of the peristome." — The Encyclopedia Britannica, 1910

Epithelium

"Portion of epithelium from the tentacle of an Actinian, showing three supporting cells and one sense…

"Muscular cells of medusae (Lizzia). The uppermost is a purely muscular cell from the sub-umbrella; the two lower are epidermo-muscular cells from the base of a tentacle; the upstanding nucloated portion forms part of the epidermal mosaic on the free surface of the body." — Encyclopedia Britannica, 1893

Muscular Cells

"Muscular cells of medusae (Lizzia). The uppermost is a purely muscular cell from the sub-umbrella;…

"Pearly Nautilus. e, eye; h, hood, a muscular portion of the foot which protects the softer parts; s, siphon; se, septa, separating the successive chambers of the shell; sp, siphuncle; t, tentacles." — Galloway

Pearly Nautilus

"Pearly Nautilus. e, eye; h, hood, a muscular portion of the foot which protects the softer parts; s,…

"Their tentacles, which are disposed in regular circles, and tinged with a variety of bright lively colors, very nearly represent the beautiful petals of some f the most elegantly fringed and radiated flowers, such as the carnation, marygold, and anemone. They are of various sizes, from that of the smallest thimble to the largest apple; and have considerable power of locomotion, being able not only to move along upon the base, but also in a reversed position upon their entacles." — Goodrich, 1859

Mouth of the sea-anemone

"Their tentacles, which are disposed in regular circles, and tinged with a variety of bright lively…

"Leaf of Sundew, enlarged, with the tentacles on one side infected over a bit of meat placed on the disk." — The Encyclopedia Britannica, 1893

Sundew

"Leaf of Sundew, enlarged, with the tentacles on one side infected over a bit of meat placed on the…

"1, Portion of epithelium from the tentacle of an Actinian, showing three supporting cells and one sense cell; 2, a cnidoblast with enclosed nematocyst from the same specimen; 3 and 4, two forms of gland cell from the stomodaeum; 5a, 5b, epithelio-muscular cells from the tentacle in different states of contraction; 5c, an epithelio-muscular cell from the endoderm, containing a symbiotic zooxanthella ; 6, a ganglion cell fro mthe ectoderm of the peristome." —Encyclopedia Britannica, 1910

Tentacles

"1, Portion of epithelium from the tentacle of an Actinian, showing three supporting cells and one sense…