Boa constrictor
All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes in zoological nomenclature). For example, "Boa constrictor" is one of four species of the genus "Boa", with "constrictor" being the species’ epithet.