Wissensch.Meeresuntersuchungen. V. Band, Abt.Helgoland. 
Taf. 1. 
N 
m I 
'g | a » DI; 
ch 
ZEN I — 
M NS <T \ A 
i-& £ | °C} 
Fig 4 | ET, 
N 
NO 
& — 49 
a ENy 
IR ü 
N 
N 
\ Fig.5 
\ 
