August 1855 Seriavine St. Encampment. the remaining hours till sunset (our bed-time) in familiar intercourse with these people, join- ing in their games, or completing our No- tabularies of their language. We traded much with them, tobacco being the almost universal tender on our side, while from them we received specimens of their various implements of war, the chase, fishing, or domestic use; also various articles of provant, as berries, "greens", Salmon, and bears or reindeer's flesh. The reindeer were from their own herds; two bears they killed with arrows upon the mountains of the island on the opposite side of the Straits. I commenced dredging operations almost im- mediately, and this business occupied me for the first week of our stay. The bottom in the Strait was mostly muddy, with a depth of from 10 to 30 fathoms; but a narrow strip of rocky or gravelly bottoms in 3-6 f. extended along the shore in the im- mediate vicinity of our encampment. The exquisite variety of station was thus easily accessible, and I made the requisite collections in a short time, and without tiring more than two or three miles from August 1855 Encampment in Seriavine St. Camp in any dredging excursion. The following is a Synopsis of the Marine Invertebrates Crustacea: a Hyas, two or three species of Hip- ostyle, a Crangon, Argis, Pandalus, and Capnous; 25 species of Amphipoda, an Isotura, Nymphon and two Cumc. Annelides: a Polypee, Nereis, Olave, an Ophelia, Siphonostomum, Thallasema and Sipunculus also a Sternaspis. A parasitic Planaria and two species of Nemertians. About 60 species of shells. Echinodermata: A Cucumaria, Synapta and a Chirodota; an Echinus, Asteracanthus and three species of Ophiodepis, also an Astro- phyton. Of fish few kinds were taken. None ap- peared to be no Cod in the Strait, as we took none after repeated trials with many kinds of bait. Two or three species of Cottus, and a Mallotus were taken in the Seine on the beach. Some small freshwater ponds of the flat near the shellsacks and Camp, were filled with small trout or young Salmon, and we took a abundance of these with the small Seine every mor- ing for several days, thus securing