198 HADIOLARIA — XirHACANTHA, ZYGACANTHA 



XIPHACANTHA CILIATA Hkl. 



(Chall. pag. 761 PI. CXXIV fig. 4, 5.) 

 1898 Marrli: 4° S. 10' W. 



Temperature: 'liS.s. 



Salinity: oo.;!-*. 



Plankton-type. Noted from the eastern tropical Atlantic, be- 

 tween 10" S. 14° W and 11° N. 18° W. My specimens were found 

 ^ among Desmo-plankton. — 1). 



XIPHACANTHA PLATYPTERA Hkl. 



(Chall. ]>ag. 7()1.) 



1898 Jaimavy: 10° N. 52° W. 



March: 14° N. 24° W.; 23° N. 28° W.; 41° N. 28° W. 

 April: 41° N. 19° W. 



Temperature: 19. i, mean of 5 obs., max. 25, min. 18. 

 Salinity: 86.10, mean of 4 obs., max. 8(3. di, min. 35.78. 

 Plankton-type. Found in the Pacific. — S. V 



XIPHACANTHA QUADRIDENTATA (.1. Mlll.^ 

 (Hkk. Monugr. pag. 387 PI. XVIII fig. lo a, b.) 



1897 December: 16° N. 48° W. 



Temperature: 25. s. 



Plankton-type. Found in the Mediterranean, west of Africa 

 and the Azores. — S. V 1). '? 



ZYGACANTHA LANCEOLATA (J. Mull.) 

 {Aranlhuniclra I. MiLi,. Abh. d. Borl. Akad. 1858 pag. 48 Fl. XI fig. 12.) 



1898 February: 5° S. 9° E. 



Temperature: 21. ^. 



Salinity: 88.9.'! (anomalous). 



Plankton-type. Noted from the Canaries and the Mediterran- 

 ean. — N. ? 



