216 BULLETIN OF THE BUREAU OF FISHERIES 
February 23, 1917 (Willey, 1921). He maintains that these individuals would not 
reproduce where found, but the presence of adults of both sexes of breeding age in 
Fig. 69 .— Calanus hyperboreus. 9, February to April stations with 50 per cent more than the average number per square 
meter for the respective months; X, May and June. The large symbols mark three times the average catch or more. 
The plain curves and arrows indicate the chief lines of migration; the hatched curve the probable site of local reproduction 
within the Gulf. 
the Bay of Fundy becomes more suggestive of local breeding if taken in conjunction 
with the existence of a more or less isolated center of abundance for the species off 
