‘ Memoirs of the Museum of Comparative <oology 
AT HARVARD COLLEGE. 
Vol. XXX1. 
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2EPORTS ON AN EXPLORATION OFF THE WEST COASTS OF MEXICO, 
CENTRAL AND SOUTH AMERICA, AND OFF THE GALAPAGOS ISLANDS, 
IN CHARGE OF ALEXANDER AGASSIZ, BY THE U. 8. FISH COMMIS-— 
SION STEAMER “ALBATROSS,” DURING 1891, LIEUT. COMMANDER 
Zz. L. TANNER, U. S. N.. COMMANDING. 
KXXV. 
REPORTS ON THE SCIENTIFIC RESULTS OF THE EXPEDITION TO THE 
TROPICAL PACIFIC, IN CHARGE OF ALEXANDER AGASSIZ, ON THE 
U. §. FISH COMMISSION STEAMER ‘“ ALBATROSS,” FROM AUGUST, 1899, 
TO MARCH, 1900, COMMANDER JEFFERSON F, MOSER, U.S.N., COM- 
: MANDING. 
W It, 
ASTEROIDEA. 
By HUBERT LUDWIG. 
WITH THIRTY-FIVE PLATES 
AND A CHART OF THE ROUTE. 
[Published by Permission of MArsHALL McDonAtp and Grorcr M. Bowers, U. 8. Commissioners 
of Fish and Fisheries. ] 
CAMBRIDGE, U.S.A.: 
Printey for the Museum. 
JuLy, 1905. 
