H60 .MURRACVT/i:, (;yst>; — I'Vuocystis 



lu'hriKiry: 81° N. I}.") W. to 1!» N. 52" W.; Caribbean Sea. 

 March; 4° S. 10° W to 17- N. 47" W,; Caribbean Sea; 2K 



~H2 N. 71" W.; 40-41" N. H4 — ol° W. 

 Ajn-U: 22" N. 17" W. to 2'.)" N. 88^ W.; Caribbean Sea. 

 May. i:-J° N. 51° W.; 11° N. oP W. 

 Aaijasl: 10—41° N. t)() — fw W. 

 Srplriiibr/-. ^iA -—VI' N. 6o"— 57" W 

 Xorniihrr: 9 S. H4" W.; 40 — 14'' N. «7^— .55 W. 

 hccruibrr: 29" S. 49 W. 

 1899 4/>;77: 36° N. 74' W. 



Temperature: 21.5, mean of 27 obs., max. 28, min. 12. 

 Salinity: 35.4o, mean of 12 obs., max. 38..-,4, min. 32.8?. 

 Plankton-type: !)■ 



PYROCYSTIS HAMULUS Cl. 



K. Vetensk. Akad. Handl. Vol. XXXIV n. 1 PI. VII iig. 23). 



1897 December and 



1898 January: 12^ N. 50- W.; 29- \. 71" W. 

 February: 16" N. 71° W. 



'March: 11—15" N, 50"— 49'^ W. 

 Jnve: 27' N. 55-' W. 

 July: 26° N. 48° W. 

 October: 30° N. 71" W. 



1899 February: 32" N. 1-7" W. 



Tempepature: 21.22, mean ef 9 obs., max. 27, min. 19.s. 

 Salinity: 8652, mean of 7 obs., max. 37,oi, min. 86.21. 

 Plankton-type. Occurs in the Indian Ocean. It belongs to 

 the western tropical Atlantic (12" —82" N.). — 1). 



PYROCYSTIS LANCEOLATA Schroder. 



(Mittb. zoo!. Stat. Neapel Vol. XIV, 1900 pag. 13 \vr. H.) 



1899 Marcli: 37" N. 26° W. 



Temperature: 15.?. 

 Salinity: 36..so. 

 Plankton-type: S ?. 



