CRUSTACEANS FROM WESTERN ATLANTIC TAl'TERSALL, 



21 



24. EUPHAUSIA HEMIGIBBA Hansen 



Occurrence 



Analysis of the above records 



Depth of net 



Meters 







25 



50 



75 



IOC 



150 



175 



200 



300 



Total 

 number 

 of speci- 

 mens 



220 

 10 



392 

 289 

 670 

 315 



Depth of net 



Meters 



400 



600 



600 



700 



750.. 



1,000 



1,100.- 



1,400 



1,800 



Total 

 number 

 of hauls 



Number 

 of hauls 

 in which 

 species 

 occurred 



Total 

 number 

 of speci- 

 mens 



Remarks. — This species is widely and generally distributed in the 

 tropical oceanic area. While occurring frequently at the surface it 

 appears to reach its maximum abundance at about the 100 meter 

 line and to be mainly an epiplanktonic form. 



25. EUPHAUSIA GIBaon>ES Orimann 



Occurrence 



