FIGURE 6 in Species of Acryptolaria Norman, 1875 (Cnidaria: Hydrozoa) collected by US Antarctic and sub-Antarctic expeditions

FIGURE 6. Hydrothecae showing operculum (arrow): A, Acryptolaria frigida Peña Cantero, 2014; B, Acryptolaria operculata Stepanjants, 1979; C, Acryptolaria sp. (A from 2/2; B from 6/339; C from 22/1595). Scale bar: 200 µm.Published as part of Peña Cantero, Álvaro L., 2020, Species of Acryptolaria Norman, 1875 (Cnidaria: Hydrozoa) collected by US Antarctic and sub-Antarctic expeditions, pp. 277-294 in Zootaxa 4767 (2) on page 289, DOI: 10.11646/zootaxa.4767.2.4, http://zenodo.org/record/377117