23 



The transactions in exchange have been as follows : — Seven- 

 teen packages of Mollusca have been received, containing five 

 thousand nine hundred specimens of six hundred and seventy 

 species. Eleven packages have been sent to as many correspond- 

 ents, including three thousand seven hundred specimens of six 

 hundred and ninety species. 



The most important receipts have come from Count Emil 

 Kornis of Hungary, and Messrs. A. M. de Cisneros of Cuba, C. 

 E. Beddome of Tasmania, F. L. Button and 0. N. Sanford of Cal- 

 ifornia, and Sanderson Smith of New York. 



