THE FRESH-WATER AMPHIPODA OF THE FALKLAND ISLANDS

All four species of freshwater amphipods recorded in the literature from the Falkland Islands were found again during a recent expedition. Hyalella curvispina Shoemaker has been previously recorded, but under several incorrect names. Hyalella neonoma nom. nov. is proposed for the preoccupied name H. patagonica, the commonest species in our collections. Falklandella obtusa Schellenberg and F. cuspidata Schellenberg are completely redescribed, and the latter is removed to a new genus, Praefalklandella. According to their external morphology, the last two genera belong to the Crangonyctoidea, but the calceoli discovered on both antennae of the male of Praefalklandella are surprisingly of the 'gammarid' type not the 'crangonyctid' type.