The somatic chromosome complement and the idiogram of Pithecia pithecia pithecia (Linnaeus, 1766).

A detailed description is given of the somatic chromosomes of two specimens of Pithecia pithecia pithecia. An indiogram, constructed on the basis of metrical chromosome data, is presented and compared with those of two other members of the Pitheciinae. The possible karyological relationship with the Pitheciinae, and the cytotaxonomic position of this group within the Platyrrhini are briefly discussed.