ClipArt ETC
"Oral surface of a male (A) and female (B) Nautilus pompilius in an expanded state. a, shell; b, external annular lobe carrying 19 tentacles on each side, and anteriorly enlarged to form the hood; c, right and left inner lobes, each carrying 12 tentacles in the female, and divided in the male into two parts; d, posterior inner lobe; e, oral cone; f, tentacles of the outer annular lobe projecting from their sheaths; g, two anterior tentacles of this lobe belonging to the hood; i, superior, k, inferior, ophthalmic tentacle; l, eye; n, lamellated organ on the posterior inner lobe of the female; o, funnel; p, spadix; q, antispadix." -Parker, 1900

Nautilus Oral Surface

"Oral surface of a male (A) and female (B) Nautilus pompilius in an expanded state. a, shell; b, external…