DIATOM \< I .i: ItlllZOSOr.KXlA 



RHIZOSOLENIA SETIGERA lirw 



(di,. l-'iflcenlh luiiiual report of lhi( Kishcry Hoard for Scoflan<l, for lSil6. pnii. 



:?oi (ig. 1-2} . 



IS'.IS Mfirc/r. 7 N. 5.") W.. coiniiKHi: 11 N. lM W. 

 Jiun-: K) N. :)}] W. 



Temperature: 2").;,, to 21.- (ti-dpical Allanlic); I i.-.' (tem|ierate 

 Atlantic). 



Salinity: ;')l,si (tropical zXtlanlic). 



Plankton-type. Ihe almost comph^te alKseiico of this s|)ecies in 

 the ocean proves thai il is iieritic form; its occurence north of South 

 America, as well as in the sprin;; in Ihe Skajjerak. proves that this 

 species is a very eurythermons rorni. Sc.iikokki; mentions il form Nap- 

 les. — A7, XiH. Xs. 



RHIZOSOLENIA SHRUBSOLEI CiJ 



(l'KHA(.Ai,t.o: Lo Diatoniiste lSi)2 Fl. X\ II li-. h. !))• 



isas Janiia/-(/: 20' N. 1.s- W. 

 Frhri'a,-,/: -M' N. 7H W. 

 Marr/i: IS— 21 N. 20--1S W.; Azores; 11 N. 2(i \V.; iVV 



X. 2(» \\'.; I'r N. IK W.; W 'X. (io W". 

 Aj>/-i/: Azores; iU \. 12 and ID W: (Ki N. 4 \V. 

 Ma//: 57 X. 25 \\ . to (in N. ^t \V.. niore or less rare. 

 Jn/i'.- area between ()l N. 22 W. and ii<» X. i It \V.. 



rare; 57 N. ;Vr W., rare. 

 .//////: area between 58' \. H2 W., (in X. 2;') W. conunon), 



(iO- iX. I \y. and 58 X. 215 W.. on the wiiole rare. 

 Ai'f/iisi : Azores; area between i>><' N. 7 \V., (iO N. 2 \V.. 



and (i(»- \. 10 W.. rare; (i:5 i\. 25 W. lo (it \. :{2 \V., 



rare. 

 ScjitriiihiT : Fiiroes, conunon ; tiO .X. 2 \\ . 

 ( )i-t(>l)iT\ (i.') X. 12 — 1:» W'., rare; Kiiriies, rare. 

 XoVi'iiibff. (il» X. K! \V.. rare; l-'iiroes. rare 



OstPiifcld'.s data used. 



