Umoirs of the ^usnim of Comparatibc loblogn 



AT HARVARD COLLEGE. 

 Vol. XXV]. 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. 

 Bv ALFRED GOLDSBOROUGH MAYER. 



WITH ONE PLATE. 



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



CAMBRIDGE, U.S.A.; 

 3printft! for tljc Jluseum. 



Janttary, 1902. 



