Edward Hallowell was an American naturalist and ornithologist known for his significant contributions to the study of American wildlife and invertebrates during the 19th century. His works reflect a keen interest in taxonomy and the natural history of various species, particularly in the context of American ecosystems. Hallowell's notable publications include 'Descriptions of American L and Shells,' which provided detailed accounts of mollusks and their habitats, and 'Prodromus descriptionis animalium evertebratorum,' a comprehensive study of invertebrates observed during an expedition to the North Pacific Ocean. His meticulous observations and classifications helped lay the groundwork for future studies in American natural history. In addition to his focus on invertebrates, Hallowell also contributed to ornithology with works such as 'Catalegue of Birds Collected on the River Muni, Western Africa,' where he documented avian species encountered during explorations. His research on the crania of ancient Britons further showcased his diverse interests in anthropology and archaeology. Hallowell's legacy lies in his detailed scientific descriptions and classifications, which enriched the understanding of biodiversity in America and beyond, influencing both contemporary and future naturalists and scientists.