L. arcuatus bow-shaped, curved < arcuare to shape like a bow < arcus bow.
● ex “Croissant” of de Buffon 1770-1783, and “Crescent Finch” of Latham 1783 (syn. Passer melanurus).
● ex “Crescent Thrush” of Latham 1783 (unident.).
Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.