MUSEUM OF COMPARATIVE ZOOLOGY. 33 



Mr. W. F. Clapp reports that the most important work done 

 on the Mollusca during the last year was the revision of the Cuban 

 land shells by Dr. Carlos de la Torre. Mr. Clapp spent a week 

 dredging on the west side of George's Bank; a note on work done 

 and a list of the shells secured appeared in the Nautilus, Vol. XXV, 

 No. 9, p. 104-106. Mr. Clapp also made a rapid journey 

 through eastern and northern Maine in order to acquire some of 

 the species especially needed to complete the New England collec- 

 tion. 



All the undetermined Unionidae in the Museum, — nearly 2,000 

 lots have been identified and distributed. It is due to the kind 

 assistance rendered by Mr. L. S. Frierson and Mr. Bryant Walker 

 that this work has been successfully completed. 



Four thousand lots of North American Pulmonata in the general 

 collection have been studied, and the nomenclature revised. 

 Much assistance in this work was given by Mrs. N. A. Clapp. 

 Four collections have been given to individuals or to schools for 

 the benefit of those who lack the advantages of a large Museum 

 collection for comparison of specimens. 



The most important additions to the collection of Mollusca have 

 come from Messrs. W. F. Clapp, E. H. and D. Blaney, R. C. 

 Rush, H. B. Bigelow, H. L. Clark, A. E. Wight, H. B. Baker, 

 George H. Clapp, R. Thomas, J. Gabriel, Outram Bangs, and the 

 Rev. W. H. Fluck. 



