X. — Third Catalogue of Mollusca recently added to the Fauna of the New England Coast and the adjacent parts OF the Atlantic, consisting mostly of Deep-Sea Species, WITH Notes on others previously recorded. By A. E. Verrill, [Published by permission of tiie U. S. Commission of Fish and Fislieries.*] The exploration of the Gulf Stream region was continued last season, under nearly the same conditionsf as in 1883, by the U. S-Fish Commission steamer Albatross, Lieut. Z. L. Tanner, com-mander. The total number of stations occupied during the season was 141. J During the five trips, between July 20 and Sept. 28, ninety-three dredgings (at stations 2170 to 2262) were made. In most of these, a large beam-trawl was used very successfully, even at great depths. Of these dredgings, 5 were in depths between 2000 and 2600 fathoms (4 successful); 20 were between 1000 and 2000 fathoms; 29 between 500 and 1000 fathoms; 8 between 300 and 500 fathoms ; 16 between 75 and 300 fathoms; and 20 between 18 and 75 fathoms. The first trip was made while the steamer was on her way north from Norfolk, Va., and some of those stations were oif the coast of Maryland, the most southern being in N. lat. 37° 57', but most of the others were situated in the region south and southeast of Martha's Vineyard, though some of them were a long way oiF the coast. The five stations in depths below 2000 fathoms were more * Number 1 of this series was published in these Transactions, vol. v, pp. 447-587, 1882; Number 2, in vol. vi, pp. 139-294, 1883. f The naturalists associated with the writer in the work, in 1884, were Professor S. I. Smith, Mr. Sanderson Smith, Mr. Richard Rathbun, Professor L. A. Lee, Mr. B. F. Koons, Professor Edwin Linton, Mr. H. L. Bruner, Mr. J. H. Blake (as artist), Mr. J. E. Benedict (naturalist attached to the steamer), Mr. A. Baldwin, W. B. Safford, Ensign U. S. N., Mr. William Nye, and others. Mr. Peter Parker and R. H. Miner, Ensign U. S. N., worked on the fishes. The parties who went out dredging on the steamer varied from time to time. Usually not more than three or four naturalists besides Mr. Benedict were sent out. :J: A complete list of these stations, with their location, temperatures, etc., has been published by me in the American Journal of Science, for February, 1885, vol. xxix, p. 154.