.■)U:^ DlATOMACEyl') — (;il.l-.T(l(:KK(JS 



Temperature: 17, s, mean of H obs., max. 2;'>.h, min. 13. 



Salinity: '-^ii.-r.t, mean of i obs., max. 'Mi.i'.i, min. Hl'.r.a uommon). 



Plankton-type. This speci(^s enters the Styli-|)lanl<ton, but its 

 rare occurrence in the ocean indicales that it is a neritic form. 

 Occurs iu the Mediterranean, the lied Sea and the Gulf of Bengal. 

 — Xni. Xt. 



CHiETOCEROS DIVERSUS Ci.. 



(C ilir. rar. irii/ii.-' Ci.. A Treatise on the Phytn-|]|aiilvlon PI. II li^. 2.) 



January. 7" N. .■);!- W. 

 isys lu'bruarij: IH^ N. 71° W 



Marrlt: 7' N. 55' W.; KJ- N. 5;V W 



June: lU' N. 5.4^ W. 



Aiif/i/sf: 1-0- N. 6()- W. 



Ik'rrmbcr: 29' S, W W.; 1H° N. 67' W. 



Temperature: 25. i, mean of 8 obs., max. 27.2, min. 2(J.-. 



Salinity: 34. .si, max. 36.oi, min. 33.9!i. 



Plankton-type. This species occurs along the coast of South 

 America and follows the Equatorial Current into the Caribbean Sea, 

 continuing with the Florida Current to -iO A'., which latitude it 

 reaches, as Desmo-plankton usually does, in August. The occurence 

 along the coasts and the low salinity indicate it as a neritic form. 

 Noted from the Mediterranean, lied Sea. Indian Ocean and Java. 

 — Xr. 



CHiETOCEROS (ATLANTICUS VAR.) EXIGUA Cl. 



(A Treatise on the Phyto-plankton PI. I fig. 9.) 



1898 January. T N. 53" W.; -i-P X. 17^ W 



March: 3(r N. 35° W. to 45° N. 13- W.; WY N. 18- W 



April: 41)" N. 19- W.; 48" N. 29- W. to .50- N. 9- \V. 



June: 48" N. 17- W 



August: Azores. 



Xori'inhrr: Azores; 5()-' N. 23" W. 



1899 January: 33° N. 15- W. 

 March: 31" N. iO W. 

 April: It)" N. 13 W. 



