The genus of lion tamarins in the subfamily CALLITRICHINAE. The common name refers to the mane on the shoulders.
Callitrichinae
A subfamily in the family CEBIDAE that consists of four genera: CALLITHRIX (marmosets), CALLIMICO (Goeldi's monkey), LEONTOPITHECUS (lion tamarins), and SAGUINUS (long-tusked tamarins). The members of this family inhabit the tropical forests of South and Central America.