Ocythoe tuberculata (known commonly as the tuberculate pelagic octopus OR the football octopus) is the only species in the genus Ocythoe. It is a member of the argonauts.
You can see the tuberacles on the mantle in this picture
Info at:
Ocythoe tuberculata
You can see the tuberacles on the mantle in this picture
Info at:
Ocythoe tuberculata