A speculation on the classification system of the Ctenophora

Abstract

Standing on the close relationship between the Cestida and the newly found Lobatolampea tetragona Horita, the classificational arrangement of the higher taxa of the Ctenophora is revised by plotting respective taxa at their adequate sites in the flow of evolutionary changes, suspected from the variability seen in the gastric canal system and the feeding habit. In addition, some considerations are paid on the dissogony and the occurrences of large swarms of sterile adult forms in some species of the Lobata.