598 PROCEEDINGS OF THE ACADEMY OF [DeC, 



Specimens have been loaned to Samuel G. Dixon, Henry A. 

 Pilsbry, Witmer Stone, Henry Tucker, C. S. Sargent, Thomas Bar- 

 bour, E. W. Nelson, Robt. Ridgway, Geo. H. Girty, Edgar A. 

 Mearns, R. W. Shufeldt, Julia A. Gardner, Mary J. Rathbun, and 

 H. C. Oberholser. 



Samuel G. Dixon, 

 Henry A. Pilsbry, 

 Witmer Stone, 

 Henry Tucker. 



Report of the Department of Mollusca. 



Work on the collection of mollusks has been confined to the 

 study-series during this year, as it has seemed inexpedient to begin 

 projected changes in the public exhibition until the alteration of the 

 building is completed. Fifteen new storage cases gave opportunity 

 for the arrangement of the current additions to the collection, with 

 the exception of the Unionidse, which remain unprotected for the 

 time being. The dust-proof storage cases now installed number 156, 

 each holding 16 trays of 3.38 square feet area. The total space 

 now occupied by the dry collection of mollusks is as follows: 



Double table-cases, glazed tops 43, with an area of 2,057 sq. ft. 



Drawers below same 624, " " "2,121 " " 



Storage cases 15(5, " " "7,914 



.. u 



Total area 12,092 sq. ft. 



From South America Ave have received valuable lots from 

 Venezuela, collected by Mr. S. Brown, of the F. E. Bond Expedition; 

 from Ecuador, collected by Mr. S. N. Rhoads, and from Jamaica, 

 collected by Dr. Amos P. Brown. Dr. C. M. Cooke, of Honolulu, 

 and D. D. Baldwin, of Maui, have contributed needed material 

 from the Hawaiian Islands, and Mr. A. Haycock gave paratypes 

 of the new species discovered by him in Bermuda. Our North 

 American collection has been increased by gifts from Messrs. J. A. 

 Allen, J. H. Ferriss, L. E. Daniels, C. B. Moore, G. H. Clapp and 

 many others. 



In the Manual of Conchology a monograph of the sub-family 

 Amastrinse has been completed, and our very large collection of these 

 snails has been revised and arranged. The American Sphariida? and 

 the mollusks of Bermuda in our collection have been worked over 

 by Mr. Vanatta. 



