A new species of metapseudid tanaidacean from Bermuda and the British Virgin Islands, Synapseudes erici n. sp., is described and illustrated. Specimens were collected in shallow water (down to 6 m) from rock washings. The new species is distinguished by a combination of characters that include a blunt or weakly bilobed rostrum, grossly asymmetrical chelae in the male with massive larger chela nearly as large as the body, three ventral propodal spines on pereopod 1, and a four-segmented uropod endopod. This species is the first member of the genus to be formally described from the warm waters of the northwestern Atlantic.