Reports on the Scientific Results of the Expedition to the Tropical 

 Pacific in charge of Alexander Agassiz, by the U. S. Fish Commis- 

 sion Steamer " Albatross," from August, 1899, to March, 1900, Com- 

 mander JEFFEliSON F. MOSER, U. S. N., COMMANDING. 



VIII. 

 THE PELAGIC TUNICATA. 



By WILLIAM E. HITTER ani. EDITH S. BYXBEE. 



(Published by permissiou of Geo. M. Bowers, U. S. Commissioner of Fish and Fisheries.) 



The occasion for the present paper was the request of Alexander Agassiz 

 that the authors should examine the pelagic Tunicates secured by the 

 " Albatross " during her cruise in the tropical Pacific from August, 1899, 

 to March, 1900.^ The material obtained on this voyage is the most in- 

 teresting of any of the " Albatross " collections yet examined by us. The 

 new Pyrosoina, which we take pleasure in inscribing to Mr. Agassiz, is 

 especially interesting. 



The collections upon which report is made have been brought together 

 from many localities in the Pacific Ocean. By far the most important were 

 made b}' the United States Fish Commission steamer "Albatross" on her 

 many voyages since she first entered the waters of the Great Ocean in 

 January, 1888. 



Cyclosalpa bakeri Ritter. 



Stn. 7 A.A., Sept. 1, 1899, Lat. N. 10^ 19', Long. W. 134° 57', surface temp. 

 76', surface net, 8 p.m. Two specimens, solitary generation, were taken. 



1 For a list of the Stations and a chart of the route see Memoirs M. C. Z., XXXVI., No. 1, 

 January, 1902. 



