The Cirrate octopus is Cirroctopus, I think, there are three of them in the Antarctic. In respect to incirrates you'd better to ask Louise Allcok, you will find her here, in Research Gate. I will be shortly in Moscow this April, so I might pop up in VNIRO to have a look on your specimens (also if you will give me e-mail I will send you PDFs of relevant species descriptions).

More photos

The Cirrate octopus is Cirroctopus, I think, there are three of them in the Antarctic. In respect to incirrates you'd better to ask Louise Allcok, you will find her here, in Research Gate. I will be shortly in Moscow this April, so I might pop up in VNIRO to have a look on your specimens (also if you will give me e-mail I will send you PDFs of relevant species descriptions).

The Cirroctopus is probably Cirroctopus glacialis. Not sure about the incirrate sorry

The first incirrate is a Pareledone: not sure which species - hard to tell from photos.  The second is a Benthoctopus: probably Benthoctopus rigbyae.  Other contributors are correct on Cirroctopus, probably glacialis, although another name may have precedence.  I don't use research gate much, so if you have queries you are better to email me directly! Best wishes, Louise

Hi Fedor. Nothing much I can add to the above comments, except to recommend that you take up Vlad's offer. For this group of octopuses in particular, detailed measurement of well preserved specimens is the only way to get confident identifications at species level, and you'll probably need DNA sequencing to make certain, at least for the so-called Benthoctopus (actually Muusoctopus - see the attached files). Muusoctopus rigbyae was mentioned earlier but there are at least 3 species off this region of Antarctica, with M. rigbyae proper in the Scotia Sea region. Two other (so far unnamed) species (see Vecchione et al., 2009) are found either side of the Ross Sea: closely related to M. rigbyae but with species-level differences in mitochondrial DNA sequences. All the best. Ian.