This is a vintage illustration of a yellow-bellied glider, a type of possum. The animal is depicted clinging to a branch of a eucalyptus tree. The glider has dark brown fur, with a lighter, yellowish underside (though this is not prominently visible in the image). Its long, bushy tail is curled downwards. The animal is positioned in profile, showing its pointed ears and small, dark eyes. It has a delicate, almost graceful posture as it grips the branch with its paws. The branch is covered in long, slender eucalyptus leaves, which are a vibrant green color. There are also a few small, white flowers blooming on the branch. The background is a soft, off-white color, which helps to highlight the animal and the foliage. The illustration is highly detailed and realistic, with careful attention paid to the texture of the fur, the shape of the leaves, and the overall anatomy of the animal. The style is reminiscent of 19th-century natural history illustrations, with a focus on scientific accuracy and artistic beauty. At the bottom of the image, there is text identifying the species as 'Petaurus Flaviventris' and the names of the artists and publishers.