This image showcases two lithographs of primates, drawn by Carel Christiaan Antony Last for Heinrich Rudolf Schinz's *Volledige Natuurlijke Historie der Zoogdieren* (1836). These detailed depictions were printed by S. de Visser en Zoon in The Hague as part of a broader effort to document and catalog various species for European audiences. The first lithograph (Pl. 35) shows the *Saimiri* and the *Nachtaap met den Kattenkop* (Night Monkey with Cat Head). The *Saimiri*, more commonly known as a squirrel monkey, is portrayed crouched and alert, while the *Nachtaap* is shown climbing a branch. The careful attention to the proportions and fur texture of these monkeys highlights their unique characteristics and behaviors. The second lithograph (Pl. 36) features the *Mico* and the *Zijdenaap met Witte Ooren* (Silky Monkey with White Ears). The *Mico* is shown climbing with agility, while the *Zijdenaap* rests on a branch, its striped tail curled in a distinctive posture. The rendering of the animals emphasizes their natural habitats and physical features, providing a visual representation of these exotic primates for European audiences. These prints, like the others in Schinz's natural history series, combine artistic skill with scientific observation. The detailed engravings are both educational and aesthetically pleasing, intended to serve as a visual record of primate species for scientific and public use.