New species of Calocarididae from the Caribbean Sea and Gulf of Mexico (Crustacea: Decapoda: Thalassinidea)

Three new species of deepwater calocaridid shrimps are recorded from the Gulf of Mexico: Calastacus colpos, Calastacus mexicanus, and Calocaris caribbaeus. The latter species is also recorded from several sites in the Caribbean Sea. Calastacus colpos is characterised by flattened contiguous eyes, a single spine on the dorsal margin of the merus of pereopod 1, and 3-4 spines on the uropodal suture. Calastacus mexicanus is characterised by rounded non-contiguous eyes, strongly spinose merus and carpus of pereopod 1, and 8-9 spines on the uropodal suture. Calocaris caribbaeus is similar to the north-east Atlantic C. templemani Squires, but differs in having weaker spination of the uropod and telson.