Sentence Examples


  • (After be distinguished, the Claus.) one occurring only in the order Stauromedusae, the other in all orders of the group. The second and commoner type is known as a rhopalium (fig.
  • At the apex of the rhopalium the endoderm is greatly thickened and consists of concrementcells secreting otoliths (Con).
  • The more proximal portion of the rhopalium usually bears one or more ocelli (oc).
  • The rhopalia are lodged in the notches be tween the marginal lobes of the umbrella, and each rhopalium is covered over by a little protecting flap or lappet.
  • Each rhopalium is a centre round which, as already stated, nervous tissue is concentrated.

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