CRUSTACEANS FEOM WESTERN ATLANTIC TATTERSALL 



25 



Genus STYLOCHEIRON G. O. Sars 



33. STYLOCHEIRON CARINATUM (G. O. Sars) 



Occuirence 



Analysis of the above records 



Depth of net 



Meters 







25 



50 



75 



100 



150 



175 



200 



300-_. 



Number 

 of speci- 

 mens 





 145 

 482 

 576 



267 



Depth of net 



Number 

 of hauls 



Meters 



400 



500 



600 



700 



750 



1,000. 



1,100 



1,400 



1,800 



Number 

 of hauls 

 in which 

 species 

 occurred 



Number 

 of speci- 

 mens 



Remarlcs. — This species is obviously very widely and generally 

 distributed in the tropical oceanic area. It occurred in 72 per cent 

 of the hauls examined and at all depths from the surface down to 

 1,800 meters. It is, however, clearly an upper water form, rarely 

 taken at the surface and most abundant between 50 and 200 meters 

 with a maximum at about the 100-meter line 



