Umoirs of tijc Museum of Compuratibe ioblogn 



AT HARVARD COLLEGE. 

 Vol. XXVI. No. 2. 



REPORTS ON THE SCIENTIFIC RESULTS OF THE EXPEDITION TO THE 

 TROPICAL PACIFIC, IN CHARGE OF ALEXANDER AGASSIZ, BY THE 

 U. S. FISH COMMISSION STEAMER " ALBATROSS," FROM AUGUST, 

 1899, TO MARCH, 1900, COMMANDER JEFFERSON F. MOSER, U. S. N., 

 COMMANDING. 



II. 



SOME SPECIES OF PARTULA FROM TAHITI. 



A STUDY IN VARIATION. 



Br ALFRED GOLDSBOROUGH MAYER. 



WITH ONE TLATE. 



[Published by permission of George M. Bowers, U. S. Commissioner of Fish and Fisheries.] 



CAMBRIDGE, U. S. A. : 



^PrtntcH for tfje iEuseum. 

 January, 1902. 



