;>::(■ DIATOMAC.K.K — DACTYLIOSOLKN 



April: \-l N. 17^ W. to M' N. 1()^ W. 



JA//y: II X. 1);')^ AV. to VI" N. 4H W. 



./^///c: 12 X. h(r W. to 15^ X. 41 W. 



Octobi'r: lO" X. (57' W. 



November: Vl^ — lo^ N. i\\^ — ()1' AV., not rare to common; 



47=— IS- X. 11- AV., more oi- less rare: oT N. iH)- AV., 



common. 

 Ucci'inher: M — VI' X. (')()- — ())>- AV., more or less rare. 

 ISIMI Fchrnary: ?yl X. 17' AV. 



Temperature: 1 1 4, mean of ))2 obs., max. 20, min. (S. 



Salinity: )>■'), mean of 27 obs., max. ;)().4o, max. H2.6i. 



Plankton-type. Tbis species occurred as a rule associated 

 witb Styli-planlvton. It appeared from j^'ebruary to June above tbe 

 Newfoundland Banks, wliere it reappeared in November, as had the 

 water, which contained this species, been covered by a sheet of an- 

 otber kind of water, that disappeared in November. — .S. 



DACTYLIOSOLEN MEDITERRANEUS II. I'fkagallo. 



;Le Diatomiste I'l. Xtll fig. 8 — 1>, tlie variety frn.ii/.< Ci.. included:. 



tSOS Aji/'i/: 111- X. 2H= AV., rare. 



Aiifjiis/ : Azores; ()0° X. 2^ \Y. (very rare) to (ir X. 10" AV. 



(not raren ()H" X. S' AV.; (>;} — (51' X. 20-— 27- AV., rare. 

 Sejttcrnhcr: 0(5' X. 2S^ AV , rare; oW X. 1' \V.; (50' X. i"" 



and 10' AV., very rare; Faroes, rare. 

 (k-iohcr: 07^ X. 27' AV. to oS X. Ho' AV., rare; (50' N. 4'— (5' 



A\^, rare. 

 Novcnibcr: Azores. 

 1SU9 February: H4' X. 10' AV , rare. 

 Mnrxrln 17' X. 8^ AV., rare. 



Temperature: IH.t, mean of 10 obs, max. 21. t, min. 9..s. 

 Salinity: ^)r)..-s;;, mean of 10 obs , max. 0(5. •■„-,, min. 81.72. 

 Plankton-type. Noted from the (iulf of Henjjal, Mediterranean 

 and tbe lied Sea. — N. 



