430 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



Polygon No. 5R. 



5. Meropodite of 

 great chela. I shall 

 here consider homol- 

 ogous organs. With 

 the exception of the 

 usual greater fre- 

 quency of the modal 

 class of the Rights, 

 the polygons No. 5R 

 and 5L are very sim- 

 ilar. The difference 

 in the coefficients of 

 variability between 

 the Rights and Lefts 

 is .657 in favor of the 

 Rights. 



POLTGON No 5L. 



