86"W. 84°W 82°W 
SS 
Las pa, 1S.7313 18-7320 
AUGUST 1973 \ SO°N NOVEMBER 1973 
BD LARVAE (number per 10m2) LARVAE (number per 10m2) 
28°N 
26° 
24°N 
CL-7405 CL-7412 
MARCH 1974 30°N MAY 1974 30°N 
LARVAE (number per 10m2) LARVAE (number per 10m2) 
28°N 
26°N 
24°N 
Figure 4.— Continued. 
11 
