Example Sentences

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The tube, connecting with the central tube around the mouth, by means of which it communicates with the ambulacral tubes, is very short.

From Seaside Studies in Natural History Marine Animals of Massachusetts Bay. Radiates. by Agassiz, Alexander

The mouth, which is surrounded by a circular tube, is not furnished with teeth, as in the Sea-urchin; but the end of each ambulacral ridge is hard, thus serving the purpose of teeth.

From Seaside Studies in Natural History Marine Animals of Massachusetts Bay. Radiates. by Agassiz, Alexander

On the contrary, in the Star-fishes the ambulacral rows are protected on either side by a row of the so-called interambulacral plates, through which no suckers pass.

From Seaside Studies in Natural History Marine Animals of Massachusetts Bay. Radiates. by Agassiz, Alexander

Transverse section of Echinarachnius; o mouth, e e ambulacra, c m ambulacral ramifications, w w interambulacra.

From Seaside Studies in Natural History Marine Animals of Massachusetts Bay. Radiates. by Agassiz, Alexander

Rhombifera.—Radial symmetry affects the food-grooves and, in the more advanced families, the thecal plates; probably also the nerves and ambulacral vessels, but not the gonads.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" by Various