"T^tr^wT?' ^^/^U^^^2^ 



Itmotrs of i\n gluseum of Comparatibi ^oologg 



AT HARVARD COLLEGE. 



Vol. XXXAZ^ No. 1. JJL 



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, laOO, COMMANDER JEFFERSON F. MOSER, U. S. N., 

 COMMANDING. MCZ 



XL LfBRA~?Y 



ECHINL *"'^^''™ 



HA'^VARD 

 THE GENUS COLOBOCENTROTUy.^'V^f^^^TY 



By ALEXANDER AGASSIZ. 



WITH FORTY-NINE PLATES. 



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



CAMBRIDGE, U.S.A.: 



^rintElr for the Jluscum, 



November, 1908. 



