There are two distinct races which until recently were thought to be separate species.

In the nineteenth century the division of humanity into distinct races became a matter for scientific debate.

Before long, there are clear differences between the different populations, so that each one is recognizable as a distinct 'race', or 'sub-species'.

Although from halfling stock, they are rapidly evolving to be their own distinct race.

Together they had speculated whether the Others might not be several distinct races who formed groups that were permanently linked.

They no longer existed as a distinct race.

Each player in the game represents a distinct alien race, and is allowed to do something that no other player can.

The people are a distinct race: they have a unique, ancient heritage and a passionate folklore all their own.

"If "people who stand in the middle of the hallway and hold conversations" were a distinct race, genocide wouldn't seem so bad."

These peoples were often considered to be a distinct race.