Sentence Examples


  • The cuticle, in some species very thick, contains numerous spicules which are long, hollow and calcified; they are secreted by epithelial papillae.
  • It is quite possible that the characters of the nematocysts might afford data as useful to the systematist in this group as do the spicules of sponges, for instance.
  • Genital duct triaulic. Spicules present in the mantle.
  • Body elongated; visceral mass marked off from foot posteriorly; dorsal appendages absent, or reduced to a single pair; spicules in the integument.
  • The mouth is terminal and anterior and surrounded by a ring of spicules or a half-ring of hooks.