The females differ from the males. The males have a duct in
under the oesophagus, extending from the mantle-cavity to the lower
portion of the sac, and there is an organ to which it attaches,
resembling a breast; (see diagram) in the female there are two of
these organs, situated higher up; (see diagram) with both sexes there
are underneath these organs certain red formations. The egg of the
octopus is single, uneven on its surface, and of large size; the
fluid substance within is all uniform in colour, smooth, and in
colour white; the size of the egg is so great as to fill a vessel
larger than the creature's head. The sepia has two sacs, and inside
them a number of eggs, like in appearance to white hailstones. For
the disposition of these parts I must refer to my anatomical
diagrams.