26 



E. ARNESEN. 



Table II. 



Bathymetrical distribution of the sponge-species collected by the "Michael Sars". 



Figures in brackets denote number of localities. 





Number of species belonging to the 



Depth (metres) 



Calcarea 



Hexacti- 

 nellidaa 



Tetracti- 

 nellidae 



Monaxo- 

 nids 



Total 



0—100 



1 (1) 



5 (3) 

 1 (1) 

 1 (1) 

 1 (2) 



2(1) 



5 (1) 

 2 (1) 



8 (1) 

 5 (3) 

 1 (1) 



1 (1) 



8 (1) 



101—500 



501-1000 



1001—1500 



1501—2000 



2001—2500 



2501—3000 



3001—3500 



3501—4000 



4001—4500 



4501—5000 



16 (8) 

 2 (2) 



1 (1) 



2 (3) 



3 (2) 



