None. From the introduction: "In the summer of 1964, I visited an Alaskan locality which, according to the map, was supposed to be marine or rather brackish, viz. Hotham Inlet not far from Kotzebue (fig. 1). Samples from a dredge haul brought some specimens of a spionid polychaete together with fresh-water hydras, plenty of the crustacean Leptodora (Cladocera), Pontoporeia affinis (Amphipoda) , mysids, and fragments of a plant, Potamogeton sp. The samples were taken at a point about 66’35‘N, 161°54’W, at a depth of about 4.6 m.