BATHYPELAGIC SQUID BATHYTEUTHIS 



173 



Table IX. — Bathymeiric disiribuiion of the total sample population by size group; 

 563 specimens of B. abyssicola /row the Antarctic Ocean 



Percent of Less than SO mm; Greater than SO m,m; 

 total popula- number and percent number and percent 



Depth, 



meters 



500-750 

 750-1000 

 1000-1300 

 1000-1500 

 1500-2000 

 2000-2500 



Total number 

 of specimens 



29 



44 

 112 

 150 

 169 

 171 



563 



tion of total population 



5.1 17 = 3% 



7.8 24=4.2 



20.0 70=12.4 



26.6 83=14.7 



30.0 43=7.6 



30.4 36 = 6.4 



of total population 



12 = 2.1% 



20 = 3.6 



42 = 7.6 



67=11.9 

 126 = 22.4 

 135 = 24.0 



36% 



64% 



Table X. — Bathymeiric distribution of greater than 

 30 nun ML size group; 360 specimens 



Table XI. — Bathymeiric distribution of less than SO mm ML size group; 203 



specimens 



87% of the total sample population of B. ahynsicola. The distribution 

 is fairly even by 500 m increments. Of the total population 60.4% 

 (340 specimens) occurs between 1500 and 2500 m ; of this segment 77% 

 (261 specimens) are greater than 80 mm in ML aiid only 23% (79 

 specimens) are smaller than 30 mm MIj. Only 13% of the total popula- 

 tion occurs between 500-1000 m, over half of which are individuals 

 smaller than 30 mm MX/. 



These data confirm that small B. abyssicola tend to live at shallower 

 levels than larger specimens. Furthermore, an examination of all 



