100 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



Subgenus Jasis (Kerdman, 1891). 



IASIS ZONARM (Pallas, 1774). 



Jlolothurium zonarium Pallas. 1774. 



Salpa polycratica ForskAl, 1775. 



Solothuria zonaria Linnaeus, 1788-1791. 



Salpa zonaria Bruguiere, 1789. 



S. cordiformis Quoy and Gaimard, 1827. 



5. microstoma Quov axd Gaimard, 1827. 



S. unicuspidata Quoy and Gaimard, reference by de Blainville, 1827. 



S. tricuspida Lesson, 1832. 



S. cord iformis-zonaria Kroiin, 1846. 



5. nitida Herdman, 1888. 



Iasis cordiformis-zonaria Herdman, 1891. 



Salpa zonaria Apstein, 1894, b. 



In this subgenus I include only one species, zonaria. Its relation- 

 ships are doubtful. They will be discussed later. I have had 

 abundant material of both solitary and aggregated forms. 



Cat. No. 6431, U.S.N.M. (solitary form with chain), Fort Mans- 

 field, Rhode Island; 2 specimens. 



Cat. No. 6434, U.S.N.M. (aggregated form), Grampus, Gulf Stream 

 (Prof. W. Libby); 12 specimens in a chain. 



Cat. No. 6466, U.S.N.M. (aggregated form with embryos), from 

 Naples Zoological Station; 1 specimen. 



Cat. No. 6536, U.S.N.M. (aggregated form), Albatross station D. 

 5237, Pacific Ocean, east coast Mindanao, Philippine Islands; May 

 12, 1908; surface; surface temperature, 85° F.; surface density, 

 1.02477; 3 specimens. 



Cat. No. 6537, U.S.N.M. (aggregated form), Albatross station D. 

 5402, between Leyte and Cebu, Philippine Islands; March 16, 1909; 

 surface; surface temperature, 81° F.; 1 specimen. 



Cat. No. 6538, U.S.N.M. (aggregated form), Albatross station D. 

 5196. Off northern Cebu Island, Philippine Islands; April 3, 1908; 

 surface; surface temperature, 82°; surface density, 1.02518; 1 

 specimen. 



Cat. No. 6540, U.S.N.M. (aggregated form), Albatross station D. 

 5186. Between Panay and Negros, Philippine Islands; March 30, 

 1908; surface; surface temperature, 80° F.; surface density, 1.02530; 

 2 specimens. 



Cat. No. 6541, U.S.N.M. (aggregated form), Albatross station D. 

 5456. East coast of Luzon, San Bernardino Strait to San Miguel 

 Bay, Philippine Islands; June 7, 1909; surface; surface temperature, 

 86° F.; 10+ specimens. 



Cat. No. 6542, U.S.N.M. (solitary and chain iforms), Albatross 

 station D. 5669, Macassar Strait, Philippine Islands; December 29, 

 1909; surface; surface temperature, 84° F.; 5+ specimens. 



Cat. No. 6543, U.S.N.M. (aggregated form), Albatross station D. 

 5456. east coast of Luzon, San Bernardino Strait to San Miguel Bay, 



