440 Mr Eattray on the Distribution of 



Boliuslan, points out that tlie area extending between 5 or 

 G and 20 fathoms must be regarded as continuous (Zusam- 

 menhangendes Gebiete), wliilst it is indisputable that here 

 too the equivalent of Orsted's Regio viridium seu Chloro- 

 spermearum is characterised as much by Fucaceo& as by 

 ' ChloropJiyllopTiycem.' 



The algoid vegetation in the sea on the west coast of 

 Nova Zembla* has been divided by Kjellman into three 

 gresit zones (Gebiete), viz. (1) the littoral, (2) the sublittoral, 

 and (3) the elittoral, the line of demarcation between the first 

 two being w^ell defined, but that between the second and 

 third being less distinct. As on the coast of Spitzbergen, 

 here too a vegetation, rich both in genera and species, was 

 found to a depth of 20 fathoms, but beyond this it became 

 more uniform, poorer, and changed entirely in its general 

 character. 



Three regions — as Kjellman more recently named them 

 — similar to those on the west coast of Nova Zembla, have 

 been found on the north coast of Scandinavia, the lines of 

 demarcation, however, between the sublittoral and elittoral 

 being indistinct, and the distinction between the elittoral 

 and littoral more indefinite than in higher latitudes. 



On the north coast of Norv/ay a Laminarian formation 

 has been found in the area of division between the littoral 

 and sublittoral regions, and assignable to the sublittoral. 



On the Bohuslan coast the Laminarian formation, though 

 represented close up to the water surface, appears in its 

 greatest perfection at a depth of from 1| to 2 fathoms, and 

 extends to 20 fathoms (sublittoral region), the Chloro- 

 phyceae occurring especially at a less depth {i.e., in the 

 littoral region). An elittoral region also occurs in depths 

 greater than 20 fathoms. 



The algoid vegetation on the coast of Bohuslan, which, 

 so far as the recorded species are concerned, presents 

 a very remarkable similarity to that of the Firth of 

 Forth, may, from the researches of Kjellman, already 

 referred to, be tabulated as follows — an algoid forma- 

 tion being tJwi part of the entire algoid vegetation luhicli 

 is distinguished hy a ijecvliar vegetative fades (Vege- 

 tationsgeprage) : — 



* Kiellmai), Murina-tiscTi. Mecr. Algenr., p. 57. 



