Sentence Examples


  • The development from the egg may be direct, or may take place with an alternation of generations (metagenesis), in which a non-sexual individual, the so-called scyphistoma or scyphopolyp, produces by budding the sexual medusae.
  • Each taeniola bears a strongly developed longitudinal muscle-band, stated by Claus and Chun to be developed from the endoderm, like the retractor muscles of the anthopolyp, but by other investigators it is affirmed that each retractor muscle of the scyphistoma arises from the lining of a funnel-shaped ectodermal ingrowth (" Septaltrichter ") growing down from the peristome inside each taeniola, in a manner similar to the infundibular cavities of Lucernaria, which in their turn are homologous with the sub f genital cavities of Scypho l A .` medusae.
  • In this state the scyphistoma is termed a strobila.
  • As preparations Scyphistoma of Chrysaora, with four perradial tentacles and horny basal perisarc.
  • Oral surface of later stage of scyphistoma of Aurelia, with commencement of four interradial tentacles.
 

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