Table 238.— Bathymetric occurrence of Semele nuculoides, 

 based on 62 samples and 146 specimens. 



Table 242 r -Bathymetric occurrence of Arctica islandica. based on 

 367 samples and 1,938 specimens. 



Depth range (m) 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Percentage of 



Samples 



45.2 



51.6 



3.2 



Specimens 



29.5 



67.8 



2.7 



Depth range (m} 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Percentage of 



Samples 



3.1 

 21.3 

 56.7 

 14.9 



3.5 



Specimens 



0.9 

 11.9 

 56.8 

 28.2 



2.2 



Total 



Total 



Table 239. --Occurrence of Semele nuculoides in bottom 



sediments, based on 62 samples and 146 specimens. 



Table 243. — Occurrence of Arctica islandica in bottom sediments, based 

 on 326 samples and 1,825 specimens. 



Bottom type 



Percentage of 



Percentage of 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



Samples 



1.6 



27.4 

 66.2 



4.8 



Specimens 



0.7 

 23.3 

 58.9 



17.1 



Bottom type 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shel 1 



Sand 



Silty sand 



Silt 



Clay 



Total 



Samples 



3.4 

 4.0 

 5.6 



4.7 

 55.8 

 8.9 

 5.6 

 12.0 



100.0 



Specimens 



0.9 

 0.9 

 2.9 



2.9 

 32.0 

 12.4 



4.9 

 43.1 



100.0 



Table 240. --Bathymetric occurrence of Semele purpurascens, 

 based on four samples and six specimens. 



Table 244. 



-Bathymetric occurrence of Veneridae, 

 based on 54 samples and 117 specimens. 



Depth range (m) 



Percentage of 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Total 



Samples 



25.0 

 75.0 



Specimens 



33.3 

 66.7 



100.0 



Depth range (m) 



Percentage of 



0-24 



25-49 



50-99 



100-199 



200-499 



500-999 



1000-1999 



2000-3999 



Total 



Samples 



37.0 



57.4 

 5.6 



100.0 



Specimens 



35.9 

 59.0 



5.1 



Table 241. — Occurrence of Semele purpurascens in bottom 



sediments, based on four samples and six specimens. 



Bottom type 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



Percentage of 



Samples 



50.0 



25.0 

 25.0 



Specimens 



16.7 

 33.3 



100.0 



Table 245. — Occurrence of Veneridae in bottom sediments, 

 based on 54 samples and 117 specimens. 



Bottom type 



Gravel 



Sand-gravel 



Till 



Shell 



Sand-shell 



Sand 



Silty sand 



Silt 



Clay 



Total 



Percentage of 



Samples 



5.6 

 3.7 



7.4 

 44.4 

 35.2 



3.7 



Specimens 



5.1 

 2.6 



6.0 

 47.0 

 35.0 



4.3 



v . 



161 



