416 PROCEEDINCxS OF THE ACADEMY OF [1880. 



and arranged the whole of the North American Eocene Collection, 

 and is now engaged upon the Miocene. 'These shells have all been 

 labeled and mounted by Mr. Parker. A suitable label has been 

 placed upon the drawers containing the " Swift Collection," and 

 these have been made accessible to the public. The Cephalopoda^ 

 Muricidse, Purpuridse, Fusidag, and Buccinidae of the general 

 collection have been rearranged in accordance with the latest 

 information upon these groups ; and it is proposed to continue 

 this work of revision upon the other families of marine shells as 

 opportunity offers. 



A rearrangement of the Land shells in accordance with the 

 natural groups of Dr. Louis Pfeiffer's " Nomenclator Heliceorum 

 Viventium," and of the ITnionidse, in accordance with the latest 

 edition of Dr. Lea's " Synopsis," will be commenced as soon as 

 possible. 



The Museum of Recent Conchology now contains 38,624 trays 

 and 136,387 specimens. 



There have been no changes made in the Bj'-Laws of the Section. 

 The officers for 1881 are : 



Director — W. S. W. "Ruschenberoer. 

 Vice-Director — John Ford. 

 Recorder — S. Raymond Roberts. 

 Secretary — John H. Redfield. 

 Treasurer — Wm. L. Mactier. 

 Conservator — Geo. W. Tryon, Jr. 

 Lihrarian — Edw. J. Nolan. 



Respectfully submitted, 



S. Raymokd Roberts, 



Recorder. 



The following are the additions to the Conchological Cabinet 

 received during 1880 ■: 



R. Arango. Two hundred and sevent3'-four species and A'arie- 

 ties of Cuban shells. 



W. G. Binney. Helix Ifayrani, Algiers. Testacella haliotoidea, 

 England. 



John Brazier. Bythinia hyalina, from New South Wales. 

 Eighty -four species Land, Fresh- water, and Marine shells from 

 Anstralia. 



J. J. Brown. A collection of mollusks from Florida and Haiti. 



W. W. Calkins. Unio Blandingianus and Tritonidea t^'ncta, 

 Florida. 



