354 



PROCEEDINGS OF THE NATIONAL MUSEUM 



Figure 7. — Parathemisto pacifica Stebbing, distribution in November 1950, CCOFI 



cruise 20. 



tributed to the fact that in March the four northernmost lines of sta- 

 tions were not occupied, and the average number is more heavily 

 affected by the small numbers in the southernmost lines. But even 

 if we consider only lines 5-8 of cruise 1, the mean number per station 

 is increased only to 229, which still falls far short of the mean number 

 for July, 445, or the mean number for lines 5-8 in July, 404. In No- 

 vember not only is there a notable decrease in numbers, but the range 

 is slightly more restricted because of the higher temperatures of off- 

 shore waters. 



