A group somewhat lessdistinct than speciesusually are, but based on characters more important than those which characterize ordinary varieties; often, a geographical variety or race.

a classification below the species level; a population that can be distinguished from another population of the same species, but may be capable of interbreeding where their ranges overlap; the Florida and the Antillean manatees are considered subspecies of the West Indian manatee.

Geographically defined aggregate of local populations which differs taxonomically from other such subdivisions of the species.

well-defined geographic or physiologic aggregate of local population which differs from other such subdivisions of the same species.