螅状幼体
螅状幼体

Scyphistoma \Scy*phis"to*ma\, n.; pl. {Scyphistomata},
{Scyphistom[ae]}. [NL., fr. Gr. sky`fos a cup + sto`ma the
mouth.] (Zo["o]l.)
The young attached larva of Discophora in the stage when it
resembles a hydroid, or actinian.