EADIOLARIA — IIYMENIASTRUM, HYSTRICHASPIS 16y 



HYMENIASTRUM EUCLIDIS Hkl. 

 (Chall. pag. 531 PI. XLIII fig. 13.) 



1898 January: T N. 53° W.; 1^1° N. 0!° W. 

 \Iarvh: 4° N. 10" W.; 9" N. 59° "\V. 

 July: 21° N. 58" W.; 41" N. 58° W. 

 August: 41° N. 57" W.; Azores. 

 September: 21° S. 36° W.; 9" N. 53° W. 

 Xoremher: 19" N. 58 AV,; 22' x\. 53° W 

 December: 18" N. 67° AV.; 34° N. 38" W 



1899 April: 36" N. 74° W. 



June: 14° S. ()°— 7" W.; 3" N. 20" W 



Temperature: 24.8, mean of 16 obs., max. 28, min 13. .i. 

 Salinity: 35.7.), mean of 14 obs., max. 37. 21, min. 34.03. 

 Plankton-type. Found in tin' central Pacilic. — 1). 



HYMENIASTRUM LEYDIGII Hkl. 



(Monogr. PI. XXXI fig. i, 5. — Small specimen, central disc O.0.1 mm.; arms O.n- 

 m. m. Patagium with 2 rows of celluhe.) 



181)9 January: 45° N. 49° W 



Temperature: 12. 

 Salinity: 35..-, j 



Plankton-type. Found in the Pacific, the Atlantic and the 

 Mediterranean. 



HYSTRICHASPIS DORSATA Hkl. 



(Chall. pag. 823. PI. CXXVIH fig. 10.) 

 1898 Noceuiber: 37" N. 27' W 



Temperature: 20. 

 Salinity: 36. 21, 



Plankton-type. Found in the cenLral Pacilic. — 1). '? 8. V 



