Hydrocalus or Hydrocaulus: How To spell?
The word Hydrocalus is misspelled against Hydrocaulus, a noun meaning "The hollow stem of a hydroid, either simple or branched. See Illust. of Gymnoblastea and Hydroidea."
The word Hydrocalus is misspelled against Hydrocaulus, a noun meaning "The hollow stem of a hydroid, either simple or branched. See Illust. of Gymnoblastea and Hydroidea."