Geoffroii

Geoffroii is a Latinized scientific epithet used in the binomial names of various organisms to honor individuals named Geoffroy. The epithet geoffroii expresses the genitive "of Geoffroy" and is commonly attached to the genus or species name in zoological and botanical nomenclature. It is part of a broader practice in taxonomy of commemorating people by Latinized epithets. The suffix -ii typically indicates a male honoree; -iae is used for females, and -orum for multiple people.

The exact person honored by a geoffroii epithet can vary; taxonomic authors may name species geoffroii in tribute to different Geoffroys, including historical naturalists bearing that surname. The spelling geoffroii is one of several common forms derived from the same surname, with variations such as geoffroyi or geoffroyorum appearing in other taxa depending on the author and the Latinization rules employed. In formal writing, the epithet is always lowercase and never capitalized, even when derived from a proper name. The use of geoffroii, like other eponyms, reflects historical practices in taxonomy and has continued in modern naming, subject to rules set by the relevant nomenclature codes. There is no single taxon represented by the term geoffroii; rather, it is a recurring element in the scientific names of multiple species across different groups.