356 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



IVOTICE OF RECEIVT AI>B>5TIONS TO TBIE ITIARIIVE INVEKTEBRATA, 

 OE TIIIE IVORTDIEASTERIV COAST OF AMERICA, 'iVBTEtt DESCRaP- 

 TIONS OF NEIV GENERA AIV» SPECBES AIVI> CRITBCAE RElflARKS 

 ON OTBBERS. 



PART II—MOLLUSCA, WITH NOTES OH ANNELIDA, ECHINODERMATA, ETC, COL- 

 LECTED BY THE UNITED STATES FISH COMMISSION. 



By A. E. TERRILI.. 



The species included in the following paper, unless otherwise stated, 

 have been collected by the parties employed by the United States Fish 

 Commission for several years i)ast in exploring- the waters and investi- 

 gating the marine animals of this coast.* This work has been under 

 the immediate direction of the writer, who has personally taken a part 

 in most of the very numerous dredging excursions. The total number 

 of stations dredged or trawled amounts t(T over 1,200. Among tlie large 

 number of persons who have taken ji more or less important part in these 

 explorations, in connection with the invertebrate department, I may par- 

 ticularly mention Prof. S. I. Smith, Prof. A. S. Packard, ]Mr. Sanderson 

 Smith, Mr. Richard Rathbun, Prof. H. E. Webster, Mr. Oscar Harger, 

 Mr. E. B. Wilson, and Mr. S. E. Clark. 



During the last three years Mr. Sanderson Smith has given special 

 assistance in caring for the testaceous Mollusca in the dredging season, 

 and has also been engaged with the writer at various other times in the 

 working up of the Mollusca of I^Torthern New England for jjublication. 

 Owing to the great accumulation of materials, this will necessarily take 

 much time. In the mean time the following catalogue will afford uuich 

 useful information as to tlie additions recently made to our molluscan 

 fauna. 



This season, the most interesting and prolific region of our coast 

 hitherto explored w^as discovered ui)on the outer bank, or slope, situated 

 from 70 to 80 miles south of Martha's Vineyard, and from 90 to 115 

 miles south of Newi)ort, R. I. 



In September and October three very successful trips were made to 

 this region. 



The first of these trips was made September 3 to 5, south of Martha's 

 Vineyard, about 70 to 80 miles (stations 8Go to 872), where the depth 

 was from 65 to 192 fathoms. The bottom was mostly fine compact sand, 

 with some mud, and with a large percentage of Foraminifera. The 



* In this article 115 species of Mollusca are recorded as recent additions to the fauna 

 of New England. Of these, 48 species are apparently uudescribod (including 23 spe- 

 cies just published in the American Journal of Scieuce, for November). The number of 

 species included in this article that are not contained in the last edition of Gould's 

 Invertebrata of Massachusetts is 1-25. Many other species, not here included, have 

 previously been added by me to those contained in Gonld's work. Many of these are 

 enumerated in the authoi-'s Preliminary Check List of the Marine Invertebrata of 

 Northern New England, 1879. Many will be found in various articles in the American 

 Journal of Science; others are contained in the Report on Invertebrates of Vineyard 

 Sound, in Part I of the Reports of the United States Fish Commission, 1873. 



