18 so.] NATURAL SCIENCES OF PHILADELPUIA. 415 



The Section has again lost a valued member, Professor S. S. 

 Haldenian, who died September 10th, 1880. Professor Halderaan 

 manifested his interest by frequent contributions to our Museum, 

 as well as by papers published in the American Journal of Con- 

 cholog}'. He also presented to us a number of copies of text and 

 plates of his celebrated monograph upon the Fresh-water Univalve 

 Mollusca of the United States. These the Section reissued, the 

 work having been long out of print, and the sale resulted to its 

 pecuniary advantage. 



Mr. George W. Try on, Jr., Conservator of the Section, reports 

 as follows : 



About fifty distinct donations and purchases of recent shells 

 will be found recorded in the detailed list hereunto appended, 

 aggregating 1216 species, represented by 4574 specimens. These 

 have all been carefully determined, labeled, mounted, and placed 

 in the cases. 



Mr. Charles F. Parker has, as usual, afforded valuable assistance 

 in preparing these specimens for exhibition. 



Mr. John Ford continues to prepare for us sections of univalve 

 shells, showing their internal form and structure. He has pi*e- 

 sented over fifty of these during the year. We are indebted to 

 Miss Anna T. Jeanes for a number of beautiful glass models of 

 mollusks, and to Mr. Joseph Jeanes for a fine suite of California 

 shells, and mounted Unguals of Ghitonidse, etc. 



Mr. John H. Redfield has presented his entire and very com- 

 plete collection of Mar-gineUidae. 



The U. S. Fish Commission, and Dr W. H. Jones, U. S. N., 

 have presented numerous specimens, both in alcohol and dry. 



We have received from Dr. Isaac Lea, the tjq^e series of 

 Claiborne (Ala.) Eocene fossils, described and figured in his 

 '• Contributions to Geology," numbering 228 species. 



Mr. John A. Ryder has prepared a drawing in outline of the 

 gigantic Architeuthis princeps, Yerrill ; although onl^^ j^g of the 

 natural size, this drawing is upon a canvas twelve feet in length. 

 It is exhibited upon the wall of the Conchological gallery'. 



Our collection of fossil shells, the systematic arrangement of 

 which has been so long neglected, has at length, under the com- 

 petent supervision of Mr. Angelo Heilprin, received that attention 

 which its importance merits. Mr. Heilprin has critically studied 



