A NEW SPECIES OF THE SHRIMP GENUS CHOROCARIS MARTIN AND HESSLER, 1990 (CRUSTACEA, DECAPODA, BRESILIIDAE) FROM HYDROTHERMAL VENT FIELDS ALONG THE MID-ATLANTIC RIDGE

A new species of the caridean genus Chorocaris Martin & Hessler, C. fortunata, is described from the Lucky Strike hydrothermal vent field along the Mid-Atlantic Ridge in the vicinity of the Azores. The new species differs from the two previously known members of the genus in having an acute conical prominence on the lower angle of the orbit (antennal spine); this spine and the rostrum extend further anteriorly than the anteriormost border of the ptery-gostomial and ventrolateral region of the carapace. Additional differences include a more stout cheliped, narrower scaphognathite, longer chela on the second pereiopod, and a much smaller size at maturity.