lieports 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 Jefferson F. Moseb, U.' S. N., Commanding. 



VIIT. 

 THE PELAGIC TUNICATA. 



By WILLIAM E. RITTER and EDITH S. BYXBEE. 



(Publislied by permission of Geo. M. Bowers, U. S. Commissioner of Fish ami Fisheries.) 



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

 that the autliors sliould examine the pehigic 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 Pyrosoma, wiiich 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 by the United States Fish Commission steamer "Albatross" on her 

 man}' voyages since she first entered the waters of the Great Ocean in 

 January', 1888. 



Cyclosalpa bakeri Rittek. 



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 llie Stations ami a chart of the route see Memoir:^ -M. C Z., XXXV'I., No. 1, 

 January, lOdJ. 



