MURRAGYTiJi, CYST^ — HEXASTERIAS, HYALOPHYSA, PYROCYSTIS 359 



Muppacytse, Cystse. 



HEXASTERIAS PROBLEMATICA Cl. 



(Kongl. Sv. Vetensk. Akad. Handl. Vol. XXXII n. 8 pag. 22. 



1898 July: Faroes. 

 October: Westmannao. 



November: 56° N. 23° W.; 51^ N. 2" W. 



1899 May: B6° N. 22° W.; 1)2"^ N. T W. 



Temperature: 7.4, mean of f) obs., max. IO.k, min. H.j. 

 Salinity: 34.84, mean of o obs., max. 35.32, min. 34.2i. 

 Plankton-type. This species belongs evidently to the arctic 

 and boreal regions. — T. 



HYALOPHYSA DELICATULA Cl. 



(Kongl. Vet. Akad. Handl. Vol. XXXIV n. 1, PI. Mil fig. 1, 2.) 



1898 August to December: Azores, common. 



1899 January: 33' N. 15° W 



Temperature: 17. a to 21.2. 

 Salinity: 36.25 to SB..^. 

 Plankton-type: S ? 



PYROCYSTIS FUSIFORMIS J. Murray.^ 



(Porceed Roy. See. London Vol. XXIV, 1876, pag. 21.) 



1898 January: 15° S. 36° W.; 9°— 10° N. 26°— 25° W,; Azores to 

 32° N. 34° W. 



Murray's & Whitting's data used. 



