Zool. Pl. toxii. [mod.L., f. Gr. τόξον bow.] A form of sponge-spicule: see quot.

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1886.  Proc. Zool. Soc., 21 Dec., 562. Sponges … Flesh-Spicules…. 6. Toxius. Curved in the centre, the two ends in a straight line, thus [fig.].

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