New Genera and Species of the Megaluropus Group (Amphipoda, Megaluropidae) from American Seas

The species of the Megaluropus group, here placed in three genera, two of which are described as new, are reported from the Caribbean Sea and the eastern Pacific Ocean. The west African Megaluropus longimerusSchellenberg is redescribed and a lectotype chosen. It is placed in the new genus Gibberosus which otherwise has three American species, G. falciformis, G. myersi, and a new species, G. devaneyi. Megaluropus is now confined to the Old World. A second new genus from the New World, Resupinus, is described to include R. visendus and two new species, R. spinicaudatus and R. coloni. These organisms have been observed to walk upside down in a cradle of their legs similar to melphidippids

Elasmopus balkomanus, a New Species from the Florida Keys (Crustacea, Amphipoda)

Elasmopus balkomanus is described from Looe Key Reef in the Florida Keys. The species is very close to the eastern Pacific E. antennatus but in the male has equally extending rami on uropod 3, only 2 (versus 4-6) spines on each lobe of the tel son in adults, a lateral ridge on the propodus of male gnathopod 2 and very heavily armed flagella of antenna 2 in the male. This species lives in a short-tufted algal turf community on coral rubble but apparently is rare because it has only been collected once in 10 years of sampling in the Florida Keys

Podocerus kleidus, New Species from the Florida Keys (Crustacea, Amphipoda, Dulichiidae)

Podocerus kleidus, a new species from high-current channels in the Florida Keys, is described. The species is very close to P. fulanus from marine channels in California but differs in the strongly cleft coxa I

Wombalano yerang, New Genus and Species of Corophioid (Crustacea, Amphipoda) from the Great Barrier Reef, Australia

Wombalano is characterized by having a interlocked basket of large spines on the bases of male gnathopod 2; these bases arc curved inward to afford the interlocking capability. This genus differs from Lemboides Stebbing in the even more shortened inner ramus of uropod 3, in the simple mandibular palp, the fused articles of the flagellum on antenna 2, and the immense basket-shovel formed of spines on articl 2 of male gnathopod 2

Gammaropsis arawakia, a New Species of Marine Amphipoda (Crustacea) from Jamaica

One of the dominant amphipods in algal turf communities at Discovery Bay, Jamaica, is a new species, Gammaropsis arawakia, characterized by long peduncle of uropod 3, small coxa I, 3-articulate accessory flagellum, extremely setose gnathopod 2, one pair of dorsal teeth on urosomite I, pointed ocular lobe, and oblique upper margin of cephalic sinus for antenna 2

Four Species of Synopiidae from the Caribbean Region (Crustacea: Amphipoda)

Synopia ultramarina is redescribed from the Gulf Stream and the Florida Keys and comments are made on the tangled taxonomy in Synopia. Tiron bellairsi, originally described from Barbados, is reported from Belize, at the opposite side of the Caribbean Basin. Garosyrrhoe bigarra, a Pacific species, is also reported from Belize, but no clear subspecific differences are detected as yet between Pacific and Atlantic populations

A New Marine Genus of the Maera Group (Crustacea: Amphipoda) from Belize

A new genus and species, Dumosus atari of the Maera group from coral rubble at Belize is described. It is related to Gammarella and is probably cryptic. The eyes are reduced. Dumosus differs from Gammarella in the loss of medial setation on the maxillae, reduction of article 3 on the mandibular palp, loss of article 2 on the outer ramus ofuropod 3, and in the loss of major spination on the plates of maxilla I and the maxilliped; in contrast to Gammarella, Dumosus retains the plesiomorphic uropod 3 typical of the Maera-group

New Species of Neomegamphopus from Tropical America (Crustacea: Marine Amphipoda)

Neomegamphopus hiatus is described from Venezuela and the Florida Keys, N. pachiatus and N. heardi from Pacific Panama, and N. kalanii from eastern Florida. Neomegamphopus hiatus and N. pachiatus differ from a close congener, N. roosevelti (tropical eastern Pacific), in the much larger coxa 1 of mature males, the less setose gnathopods, and the broader carpus of the first gnathopod bearing a much deeper incision defining the posterior tooth; the carpus is much shorter and stouter in N. hiatus and N. pachiatus than in N. roosevelti. Neomegamphopus heardi differs from the other species in the bifid tooth on the carpus of gnathopod I in males. Questions regarding the reclassification ofthe Isaeidae, Aoridae, and Neomegamphopidae are explored and the three families amalgamated again to their status of 1973 (except Corophiidae which is segregated)

Two New Species of the Siphonoecetes Complex from the Arabian Gulf and Borneo (Crustacea: Amphipoda)

A new species, Siphonoecetes arabicus, is described from the Arabian Gulf, and a new species B. wongi is described in the new genus Borneoecetes from Borneo. The former species does not fit recently described subgenera, thus indicating a necessary reassessment of those taxa

A New Species of Chevalia from the Caribbean Sea (Crustacea: Amphipoda)

A new Caribbean species, Chevalia carpenteri is described; heretofore only one species of the genus was known, but we have examined material that suggests morphs may represent distinct species or subspecies. We report C. mexicana and extend its range from the northern Gulf of Mexico to Belize. Our new species differs from the world complex of C. aviculae morphs in the ovate article 2 of pereopods 5-7 and the posteriorly flat epimera with large notches