Descriptions of Two Species of Frogs, Genus Ptychohyla Studies of American Hylid Frogs, V

"Descriptions of Two Species of Frogs, Genus Ptychohyla" by William Edward Duellman is a scientific paper from the 1960s that's part of a series about American hylid frogs, naming two newly discovered species, Ptychohyla ignicolor and Ptychohyla chamulae. The paper describes field research in southern Mexico and northern Central America, showing frogs collected from the cloud forests. It tells about each species' physical look, where they live, and how they sound, while also comparing them to other kinds of frogs to show how they are distinct in both looks and actions, highlighting the importance of their environments.