TABLE II. 



283 



Anal fin. — The number of spines in the anal tin varies from the normal in 

 only nine specimens from Turkey LaRe and in six from Tippecanoe Lake. This 

 variation is always toward a lower number, and extends only through one spine. 



Turkey Lake specimens have on an average fewer rays in the anal than 

 Tippecanoe Lake specimens. The averages are 10.87 for the former, 11.15 for the 

 latter. Fig. 2 represents the curves for the anal rays. Here again, and also in 

 the succeeding curves for the comparison of the two lakes, the continuous line 

 represents Turkey Lake and the broken line Tippecanoe Lake. Table III gives 

 the summary of the anal rays for both lakes. 



