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edges in different genera; but the tongue is, I believe, in all most elaborately armed with spinous teeth, arranged in numerous rows.
TONGUE-TEETH OF EOLIS.
The mouth has large fleshy lips prolonged into an internal tube, within which is a muscular inner lip, capable of being pushed forwards, and bringing with it the mouth and jaws when the animal is in the act of seizing its prey. The mouth contains two large horny jaws placed vertically, and armed with cutting edges. The tongue is shaped like a strap, and can be moved in different directions, or thrown forwards to assist the animal