In Chiton the renal organs are not affected by the metamerism as they are in Nautilus.
The only other example which we have of this metamerism in the Mollusca is presented by the Chitons.
In the articulates the metamerism is chiefly external—an articulation of the body wall.
In accordance with the metamerism of Nautilus already noticed, there are two pairs of renal organs.
metamerism me·tam·er·ism (mə-tām'ə-rĭz'əm)
The condition of having the body divided into metameres, exhibited in most animals only in the early embryonic stages of development.