Abstract
ABSTRACT The second known agostocaridid shrimp, Agostocaris bozanici, is described from a cenote on Cozumel Island. The new species is characterized by having a dorsally unarmed rostrum, and 5 pairs of lateral, and 5 pairs of posterior spines on the telson. A new genus and species of hippolytid, Yagerocaris cozumel, is described from a different cenote and an anchialine cave on Cozumel. The genus is characterized primarily by the possession of a very strong pterygostomian spine on the carapace, subequal second pereiopods in which the carpi have 5 articles, a single arthrobranch of maxilliped 3, and a rectangular posterior lobe on the telson. Both shrimps are true anchialines, having been taken from marine-salinity water in cenotes well away from the coast, and both have reduced eyes. The hippolytid shrimps Somersiella sterreri Hart and Manning (previously known only from Bermuda) and Janicea antiguensis (Chace) (previously recorded from Antigua, Bermuda, and the Bahamas) are recorded from a cave on Cozumel Island. While these latter 2 species show some differences from the original descriptions, it is felt to be premature to place them in new taxa.
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