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No. 6. — Reports on the Dredging Operations off the West Coast of Central 

 America to tiie 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 

 Commission Steamer "Albatross," during 1891, Lieut. Commander Z. L. 

 Tanner, U. S. N., Commanding. XXX VII. Reports on the Scientific Kesults 

 of the Expedition to the Eastern Tropical Pacific, in charge of Alexander 

 Agassiz, by the U. S. Fish Commis.siou Steamer "Albatross," from October, 

 1904, to March, 1905, Lieut. Commander L. M. Garrett, U. S. N., Command- 

 ing. XIV. The Mollusca and the Brachiopoda. By William Healev 

 Dall. (22 plates.) October, 1908 203 



