iv CONTENTS. 



Page 



No. 8. — Heports on tlie 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 

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

 Tannek, U. S. N., commanding. XIV. Report on the Pelagic Scliizopoda. 

 By Arnold Ortmann. (1 Plate.) September, 1894 99 



No. 9. — Cruise of the Steam Yacht " Wild Duck " in tiie Bahamas, January 

 to April, 1893, in charge of Alexander Agassiz. II. Notes on the Shells 

 collected. By William Healy Dall. (1 Plate.) October, 1894 ... 113 



No. 10. — 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 Alexandkr Agas.siz, carried on by the U. S. Fish 

 C'ommission Steamer "Albatross," during 1891, Lieut. Commander Z. L. 

 Tanner, U. S. N., commanding. XIIL Die Opisthobranchien. Von 

 Rudolph Bergii. (12 Plates.) October, 1894 125 



No. 11. — Cruise of the Steam Yacht " Wild Duck " in the Bahamas, January 

 to April, 1893, in charge of Alexander Agassiz. III. An Account of 

 some Medusa; obtained ^in the Bahamas. By Alfred Goldsborocgh 

 Mayer. (3 Plates.) November, 1894 235 



No. 12. — 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 Commission Steamer "Albatross," during 1891, Lieut. Commander 

 Z. L. Tanner, U. S. N., commanding. XVI. Die Pelagischen Copepoden. 

 Von WiLUELM GiESBRECHT. (4 Platcs.) April, 1895 243 



