"Amphitretus" and "Bolitaena" are two other transparent, gelatinous pelagic incirrate octopods. Bolitaena is a genus of pelagic octopods from the subfamily Bolitaeninae in the family Amphitretidae. Japetella is a genus of pelagic octopods from the subfamily Bolitaeninae in the family Amphitretidae. In cirrate octopods suckers and cirri run and alternate on the entire length. The eye structure is very different from other octopods. A fourth form "octopods" is occasionally used by scientists for taxonomic purposes. However, "octopods" was found in 53 papers.