CILIATA — UNDELLA 125 



November: 48^"— 50" N. 41^—81" N. to 'M? N. W W.; 5^ S. 



33° W. 

 Ikcembcr: Canaries; Azores; 49' N. 27°— 35'' W.; Caribbean Sea. 

 1899 January: Canaries to 35° N. 9^ W.; 48°-45° N. 39°— 49°W. 

 February: 34° N. 40° W. 



March: 43° N. 16° W. to 36° N. 29° W.; 18° N. 45° W. 

 April: 40°— 44° N. 16°— 15° W. 

 June: 20° S. 1° E. to 4° S. 19° W.; 21° N. 45° W. to 12° N. 



51° W. 

 Jaly: ir-— 15° N. 26°-29^ W.; 25°— 28° N. 37°— 40° W. 



Temperature: 20.73, mean of 68 obs., max. 27..{, min. 10.8. 



Salinity: 35. ok mean of 51 obs., max. 37..io, min. 34. gs. 



Plankton-type. This species occurs in 'the Mediterranean and 

 in the Red Sea. It belongs to the tropical and subtropical Atlantic, 

 from at least 20° S. to about 50° N. (November, December). — 8. 

 and 1). 



UNDELLA HEROS Cl. 



(Ofvers. Kongl. Vetcnsk. Akad. Ftirh. 1899 n. 10, pag. 974 . 



1898 February: 30° N. 74° W. 

 May: 41° N. 51° W. 



November: 42° N. 64° W.; 51° N. 20° W. 

 December: 34° N. 38° W. 



1899 Xorembcr: 49° N. 40° W. 



Temperature: 17.9, mean of 5 obs., max. 21,3, min. 14. 

 Salinity : 35. s(!, mean of 3 obs., max. 36.59, rain. 35. 

 Plankton-type. />. or 8. 



UNDELLA HYALINA v. Dadav. 

 (Mitlh. d. Zool. Stat. Neapel, Vol. VII, 1887, pag. 56i-, I'l. XVIII. tig. 17). 



1898 October: Azores. 



November: Azores; Canaries; 34°— 36° N. 10°— 14° W. 

 December: Azores. 



1899 January: Canaries. 

 March: Azores. 



