Table 1. — Data on plankton samples collected in the 

 North Pacific Ocean, May 6-13, 1955 



[All samples Irom 140 m. to surface] 



I The net was torn during the tow. 



of each found in the aliquot, and the calculated 

 number of copepods per cubic meter of water. 



GENERAL REMARKS 



The collections contained 64 species of cala- 

 noid copepods. Two species, Euchirella imispina 

 and Euchaeta lorighti, were new. One species, 

 Calocalaniis tenuis Farran, 1926, had not been 

 previously recorded from the Pacific Ocean. The 

 hitherto unknown female of Centropages 

 elegans Giesbrecht, 1895, was discovered and 

 described. 



The number of species increased from 14 at 



Table 2. — Species and number of specimens in each 

 siibsample of plankton 



**X" indicates the species found from collections in the North Pacific Ocean, 

 May 6-13, 1956, in other fractions of original sample] 



Table 2. — Species and number of specimens in each 

 subsample of plankton — Continued 



["X" indicates the species found from collections in the North Pacific Ocean, 

 May 6-13, 1956, in other fractions of original sample] 



the northernmost station to 48 at the second 

 southernmost. Except for Clausocalanus arcui- 

 cornis, none of the species occurred at all the 

 stations. The common species toward the north- 



528 



U.S. FISH AND WILDLIFE SERVICE 



