CILIATA — UNDELLA 126 



November: 48°— 50° N. 41°— 31° N. to 36° N. 14° W.; 5° S. 



33° W. 

 December: 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. 

 Ap/'il: 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. 

 July: 11°— 15° N. 26°-29° W.; 25°— 28° N. 37°— 40° W. 



Temperature: 20.7s, mean of 68 obs., max. 27.s, min. lO.s. 



Salinity: 35.94, mean of 51 obs., max. 37.4o, min. 34.88. 



Plankton-lype. Tliis 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). — S. 

 and D. 



UNDELLA HEROS Cl. 



(Ofvers. Kongl. Vetensk. Akad. Forh. 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 November: 49° N, 40° W. 



Temperature: 17.9, mean of 5 obs., max. 21.3, min. 14. 

 Salinity: 35.86, mean of 3 obs., max. 36.59, min. 35. 

 Plankton-type. D. or S. 



UNDELLA HYALINA v. Daday. 

 (Mitth. d. Zool. Stat. NeapeJ, Vol. VII, 1887, pag. 564, PI. XVIII, fig. 17). 



1898 October: Azores. 



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

 December: Azores. 



1899 January: Canaries. 

 March: Azores. 



