DIATMMACK.K — CM-KTOC.KROS iiUi} 



Temperature: lo.i, mean of 17 obs., max. 2i').\. miii. lO.H. 

 Salinity: .');'). „.•,. iiuvin of II obs., max. H().:t.-,, iniii. i);').!;. 

 Plankton-type. f. /irapn/ita/nis Schk.h.i.k i-epresents ibis fmm. 

 wliicb tliiis occurs also in tbc ■Mcditorraiicaii. — N. 



CH;ET0CER0S femur Smn t. 



(Ber. d. Deiilscheii I5i.t. (ieselis. 1895 Vol. Xlil |>ag. 45). 



IS^IT Ih'cfiiihi'r: 12 N. 50 \V., very rare. 

 IS9S J(iiiii(ii-ii: 7 X. o.'V \V.. rare. 



Temperature: 2().4 to 2(i..-.. 

 Plankton-type: />. (<>r A'/). 



CHETOCEROS FURCA Cl. 



A Treatise on the I'iiylo-iilanktoii I'l. 1 lii:. 10. 



IS'.IS Jutiiutvij: 6^—7 N. oo'-— oH W. 



FfhriKti'ij: If) X. 71 \\ . 



March: 28' X. 38' W.; )>(> X. 29^ W. to U X. 21 2:{ \V.; 

 \V N. 5fi W. to ir N. 1-8 W. 



April: i9 X. 22' W. 



Man: \\ X. 51 ^V. 



Ih-ci'iiihcr: 18 X. ()7 \V. 

 1S99 Mdi'clr. A/ores. 



Man: :55 X. 75 W. 



Temperature: IS.i. mean of If) obs., max. 27, mm. 11. 



Salinity: H5.7s, mean of 10 obs., max. ;{«).io, min. :-i4..sb. 



Plankton-type. Tbis si)eeies occurs in tbe region round the 

 Sar^^asso Sea and belongs to tbe tropical or subtropical Styli-plankton. 

 It bas not been seen beyond 50' X. Found in tbc Indian Ocean, 

 tlie Mediterianean and tbe lied Sea. — N. 



