Occurrence of Mysidopsis Almyra (Mysidacea, Mysidae) On the East Coast of Florida, U.S.a

tification of the specimens. This constitutes the first report of M. almyra from the Atlantic coast. The previously known geographic range of M. almyra was confined to the Gulf of Mexico, extending from the southwestern Everglades, Florida (Bowman, 1964; Brattegard, 1969, 1970; Odum & Heald, 1972) to Laguna de Tamiahua, a lagoon between Tampico and Tuxpan, Mexico (Price, unpublished). Mysidopsis almyra is one of the most abundant mysid species in the estuarine waters of the Gulf of Mexico (Conte & Parker, 1971; Darnell, 1958; Mackin, 1971; Odum & Heald, 1972; Price, unpubl.), and further collections will prob ably find it common along the east coast of southern Florida. Neomysis americana (S. I. Smith) is the most common mysid in the shallow marine waters of the Atlantic coast of North America, extending from the Gulf of St. Lawrence to St. Augustine, Florida (Williams, Bowman & Damkaer, 1974). Williams et al. (1974) speculated that it may range southward to Cape Canaveral, Florida which is south of the present collection of M. almyra. Thus, this M. almyra range exten sion shows a probable overlap of the distribution of these species. Further in vestigations within this probable area of sympatry should more precisely define niche differences between the two wide ranging species.