Dantyinae, a new subfamily of the Sarsiellidae (Ostracoda, Suborder Myodocopina) is proposed for Dantya magnifica , a new genus and species of marine ostracode from Carrie Bow Cay, Belize, and 2 previously described species (1 in open nomenclature). The new genus and species is described and illustrated. The phylogenetic relationships of the new subfamily are discussed