Proceedings of the Zoological Society of London, London, Academic Press, periodicals, zoology, A Midas Geoffroyi monkey is depicted perched on a leafy branch, showcasing its strikingly detailed fur coat that transitions from a rich brown on its back to a lighter hue on its belly. Its elongated, curled tail elegantly contrasts with its stout body. The monkey's large, expressive eyes and characteristic facial markings add a whimsical character to its appearance. With delicate dexterity, it clutches a small piece of food, seemingly engaged in a moment of contemplation amidst lush foliage. This illustration captures the unique charm and intricate features of this species, emphasizing its place in the rich biodiversity of its habitat.