Jeurys Mejia was a Human man of Dominican descent. Mejia was an anthropologist aboard the USS Enterprise.
In 2269, the crew of USS Enterprise visited Drissana II, where they took readings of the Neanderthal-like natives. Three months later, Mai Duyen Trinh, Mejia and other teammates studied the data, using the holographic rec room in their studies. (TOS novel: Allegiance in Exile)