366 THE AMERICAN NATURALIST [Vol.LVI 



of branched anal rays- is 10 in the 19199 series, 9 in the 

 19198 class ; the averages are 9.52 ( + 0.05) for 19198 males, 



FEEQUENCY TABLE I 

 Comparison of the Meristic Features- of the 1918 and 1919 Broods op 



