CHAPTER XVI

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ECHINODERMATA.

STAR-FISHES, SEA-URCHINS, AND SEA-CUCUMBERS.

The Star-Fishes.--Their Feet or Suckers.--Voracity of the Asterias. --The Rosy Feather-Star.--Brittle and Sand-Stars.--The real Sea-Stars of the British Waters.--The Sea-Urchins.--The Pedicellariæ.--The Shell and the Dental Apparatus of the Sea-Urchins.--The Sea-Cucumbers.--Their strange Dismemberments.-- Trepang-fishing on the Coast of North Australia.--In the Feejee Islands 328

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