Bulletin of the Museum of Comparative Zoólogy 
AT HARVARD COLLEGE. 
Vor. XXVII. No. 3. 
REPORTS ON THE DREDGING OPERATIONS OFF THE WEST COAST OF 
CENTRAL AMERICA TO THE GALAPAGOS, TO THE WEST COAST 
OF MEXICO, AND IN THE GULF OF CALIFORNIA, IN CHARGE OF 
ALEXANDER AGASSIZ, CARRIED ON BY THE U.S. FISH COMMIS- 
SION STEAMER “ALBATROSS,” DURING 1891, LIEUT. COMMANDER 
Z. L. TANNER, U. S. N., COMMANDING. 
XVII. 
BIRDS FROM COCOS AND MALPELO ISLANDS, WITH NOTES ON 
PETRELS OBTAINED AT SEA. 
Bv C. H. TOWNSEND. 
[Published by Permission of MARSHALL MODONALD, U. S. Fish Commissioner.] 
Wirn Two Coronkp PLATES. 
CAMBRIDGE, MASS, U.S. A.: 
PRINTED FOR THE MUSEUM. 
Jury, 1895. 
