United States or Mali ? Vote for the TOP Country of the Week !
"The creatures the natives are collecting are the holothurians, or sea-cucumbers," answered the naturalist. "There are a great many species of these creatures; but, I believe, those found on banks of coral sand are the most valued." Emily and Grace, however, when they saw the creatures, could not help expressing exclamations of disgust at their appearance.
At the periphery is a circular tube connecting them all, and the tentacles, which hang down when the animal is in its natural position, connect at their base with the radiating tubes, while numerous smaller tentacles may form a kind of fringe all round the margin. The third and highest class includes the Star-Fishes, Sea-Urchins, and Holothurians or Beches-de-Mer.
These remarkable hyper-metamorphoses remind us of the metamorphosis of the embryo of Echinoderms into the Pluteus-and Bipinnaria-forms of the starfish, sea urchins and Holothurians; of the Actinotrocha-form larva of the Sipunculoid worms; of the Tornaria into Balanoglossus, the worm; of the Cercaria-form larva of Distoma; of the Pilidium-form larva of Nemertes; and the larval forms of the leeches; as well as the mite Pentastomum, and certain other aberrant mites, such as Myobia.
Leuckart proposed to subdivide the Radiates into two groups: the Coelenterata, including Polyps and Acalephs or Jelly-Fishes, and Echinoderms, including Star-Fishes, Sea-Urchins, and Holothurians.
It is littered with shells and holothurians, with antique tesserae of blue glass and marble fragments, with white mosaic pavements and potteries of every age, from the glossy Greco-Roman ware whose delicately embossed shell devices are emblematic of this sea-girt city, down to the grosser products of yesterday.
And you saw one of those giant rays; I want a whole hour's talk about the fellow. And What an old babbler I am! talking to you when you should be talking to me. Now begin. Let us have the trepangs first. Are they real Holothurians or not?"
Word Of The Day