This watercolor in the Benjamin Smith Barton Papers depicts a vespertilionid bat and was possibly created by his colleague, Titian Ramsey Peale. It is just one of many pen and watercolor drawings and engravings of botanical and natural historical subjects by Barton and his circle, including William Bartram, three illustrations of rattlesnake anatomy attributed to Benjamin Henry Latrobe, and other works by Frederick Pursh, Pierre Turpin, and other artists.