Crossword-Solution: FLAGELLA 8 letters, 13 clues 🏆 scrabble score: 12

These flagella keep up a lashing to and fro in the liquid, and the lashing serves to propel the bacteria through the liquid.

Nevertheless it may be remarked that in both species, especially in _Ocypoda,_ the olfactory filaments in their ordinary situation are very much reduced, and when they are in the water their flagella never perform the peculiar beating movements which may be observed in other Crabs, and even in the larger _Gelasimus_; moreover, the organ of smell must probably be sought in these air-breathing Crabs, as in the air-breathing Vertebrata, at the entrance to the respiratory cavity.

There still remains the difficulty of explaining why the male gametocytes after reduction develop into similar sperms, with their heads and long flagella, although half of them possess one X chromosome each and the other half none.

Many forms are motile--some in virtue of fine thread-like flagella, and others through contractility of the protoplasm.

With an undulatory membrane Genus _Trimastix_ between accessory flagella Without such membrane; flagella Genus _Costia_ contained in a ventral groove while at rest * Presence at Woods Hole indicated by asterisk.