Pelagic Hyperiidea — Bary 
331 
Fig. 8. The diurnal variation at the surface as shown by the hourly catches of commonly occurring species 
expressed as a percentage of the total catch of the species. 
nomic distinction between them is desirable, 
but preferably at an infraspecific level. 
AMPHIPODS IN THE ECONOMY OF THE AREA 
An assessment of the position of species of 
Amphipoda in the productive economy of 
southern New Zealand waters was not aimed 
at, although the common species would seem 
to be important. Species are frequently cap- 
tured and may occur in large numbers, even 
in the 3-minute tow, e.g., 729 P. gaudichaudii 
collected from 22 stations; 408 P. gradlipes 
