Some Notes on <i>Mysis Relicta</i> and Its Relatives in Northern Alaska

Reports studies of mysids on the Arctic Slope and adjacent continental shelf off Barrow in summer 1961. Several localities, their physical and chemical properties and faunal compositions described, were investigated as possible habitats of Mysis. M. relicta were found in abundance in a freshwater lake, a marine lagoon, and a metahaline pond; the species apparently prefers shallow inland waters to the open sea. The absence of mysids from several freshwater lakes is attributed to isolation. Dispersal in this unglaciated area is considered, also possible interspecific competition between M. relicta and litoralis.