CONTENTS 



Page. 



Eeport of the Director 7-11 



Additions to the State Museum during the year 1881 12-18 



Current work of the Museum 19-67 



List of the Unionidse of the Gould Collection 68-81 



List of the Unionidre of the New York State Collection 82-83 



List of the Unionidae of the General Collection 84-101 



List of the Land Shells of the New York State Collection. . . 102-106 



List of Tvorbiculidae of the New York State Collection 107 



List of Land Shells of the United States in the Museum Col- 

 lection 108-111 



List of Shells presented to the State Museum in 1875, by Dr. 



James Lewis 112-117 



Statistics relating to the New York State Museum of Natural 

 History, as compiled from the Report of the Tenth 



Census of the United States, January 4, 1882 118-119 



Notice of the Machinery and Methods of Cutting Specimens 

 of Rocks and Fossils at the New York State Museum of 



Natural History. By James W. Hall 121-124 



Report of the Botanist. Charles H. Peck 125-164 



Report of the Assistant in charge of Zoology 165-167 



Anatomy and Physiology of Anodonta fiuviatilis. By George 



B. Simpson '. 169-191 



The Aboriginal Work on Bluff Point, Yates county, New York. 



By C. Hart Wright 193-194 



Notes on the Geology of Yates county, New York. By Berlin 



H. Wright 195-206 



Descriptions of New Species of Fossils from the Trenton 



Group of New York. By C. D. Walcott. 207-214 



Preliminary notice of the Lamellibranchiate shells of the 

 Upper Helderberg, Hamilton and Chemung Groups. By 



James Hall 215-406 



Descriptions of Corals from the Niagara and Upper Helderberg 



Groups. By James Hall 407-464 



Descriptions of the Species of Fossil Reticulate Sponges, con- 

 stituting the family Dictyospongidas (abstract). By 

 James Hall , 465-481 



