Juvenile Tunas—SCHAEFER and Marr 
271 
fins and that these rays subsequently become 
contained in the median furrow so that they 
are no longer visible. This is in accord with 
our findings. The dates of our collections indi¬ 
cate the possibility of a somewhat earlier spawn¬ 
ing season for Auxis off the Pacific Coast of 
Central America. 
We have been unable to examine papers by 
Sanzo (1909, 1910) which apparently contain 
information on larval and juvenile Auxis. 
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