Sentence Examples with the word Hydroidea

A natural classification of the Hydroidea has yet to be put forward.

The two kinds of persons present in the typical Hydroidea make the classification of the group extremely difficult, for reasons explained above.

SUB-ORDER HYDROIDEA CALYPTOBLASTEA (LEPTOsome with polyps always differentiated into nutritive and reproductive individuals(blastostyles) enclosed in hydrothecae and gonothecae respectively; with sympodial type of budding.