VI. — Second 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 tlie U. S. Fish Commission.] 



The following paper was originally intended to form merely a brief 

 supplement to the Catalogue published by nie, in 1882, in Vol. V. of 

 these tx-ansactions, to include such con-ections and additions as had 

 been noticed up to date. But the discovery of a very large number 

 of interesting additional species, many of them new, during the deep- 

 sea dredging cruises of the Fish Commission Steamer, Albatross, in 

 1883, made it desirable to extend the paper so as to include many of 

 the more important of these discoveries. This has caused delay in 

 the printing of the paper and much increased its length, and, as I 

 hope, its value. Many of the additions made in 1883 are from much 

 deeper water than we had pi-eviously explored (1,000 to 2,900 fath- 

 oms), and consequently from a greater distance at sea; so that these 

 cannot properly be regarded as pertaining particularly to the " New 

 England fauna." They belong rather to the general deep-sea fauna 

 of the western Atlantic. Others are from the deep waters of the con- 

 tinental slope, beneath the Gulf Stream, in 100 to 600 fathoms. As 

 these deep-sea forms are likely to extend all along our coast, at simi- 

 lar depths, and even to foreign waters, I have not thought it desir- 

 able to exclude from this paper any deep water species because of 

 its having been taken even as far south as off Cape Hatteras, which was 

 nearly the southern limit of the dredgings of the Albatross in 1883. 

 But I have excluded the strictly southern shallow water forms, dredged 

 at moderate depths off the coasts of North Carolina and Virginia, 

 though many of them are new additions to the fauna of our coast. 



There are, doubtless, to be added to our list many species of small 

 and difficult shells, belonging to certain groups that have not yet been 

 fully examined, or of which we have taken only imperfect examples. 

 These will chiefly belong to the Bidlidm, Turhonilla, Odostomia, 

 Cryptodon ^ and Yoldia. 



I am greatly indebted to the skill of Mr. J. H. Emerton for the 

 unusually accurate illustrations, and to the U. g. Fish Commission for 

 the privilege of using them in this place. 



Trans. Conn. Acad.. Vol. VI. 18 April Vl, 1884. 



