Cases 5 and 6.

[unclear: Cases] the Platyrhine Monkeys of America, distinguished by the distance between the nostrils, and generally having a prehensile tail. These are represented by the Black Spider Monkey (Ateles ater), the Golden [unclear: the] (Mycetes laniger), the Negro Monkey (Lago-

thrix humboldti), two species of Capuchis [unclear: Mount] (Cebus), the curious Douroucouli (Nyctipithecus [unclear: tri] tus), and the Squirrel Monkey (Chrysothrix sciureus).

The Marmosets form a family by themselves ([unclear: Heplidœ]). They are represented by the Common [unclear: Mar] (Jacchus vulgaris), and the beautiful orange Silky [unclear: Man] Moset (Midas rosalia).