Studies on the Crustacea of the Turks and Caicos Islands, British West Indies. IV. Heteromysis (Heteromysis) spottei, a new species (Peracarida : Mysidacea : Mysidae) from Pine Cay

During a survey of the marine Crustacea in the vicinity of Pine Gay, Turks and Caicos Islands, an undescribed mysid, Heteromysis spottei, new species, was collected at depths ranging from 1 to 18 m. The new species belongs to the subgenus Heteromysis Bacescu and can be distinguished from the five ot her members of that subgenus known from the western Atlantic by the setatio n of the telson. In Heteromysis spottei the telson has spine-setae along th e entire length of the lateral margins, spinules along the entire margins o f the cleft, and a pair of spine-setae on each apical lobe, the outer being nearly three times longer than the inner. A key and diagnostic table to th e species of the subgenus Heteromysis from the Northwest Atlantic is presen ted.