Bull. U. S. H. F.. 192S. (Doc. 1053.) 



Fig. 8.— Scale of Lake Huron bening (L. arledi) taken October 27, 1921, at Bay ("ily, Mich. (Saginaw 

 Bay). Length, 227 millimeters. Mature female. Age \". Note the distinctness of the first 

 annulus. Compare with Figures 9 and 10 



Fig 9.— Scale from the same individual of wliicli scales are .■iliowii in Figure .s. Note the indistinct- 

 ness of the first annulus. Compare with Figures 8 and lu 



