138 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



Polygon No. 12R. 



Polygon No. 12L. 



1 _'. Sferopodite of second leg on side, of small chela. Polygons No. 

 12B and 12L. Attention may be called to the fact that in both Rights 

 and Lefts the meropodite on the side of the great chela is larger than tli.it 

 of the opposite Bide. This apparently indicates that the influences which 

 determine the development of the great chela affect other parts of the 

 b "1\ as well. 



I TabU of Correlation of Meropodites of Chelae. 



In Table V. the correlation <>f the meropodites of the chelae of the left- 

 handed animals is Bhown. This was determined in order to see whether 

 there was do! an inverse correlation; for it Beemed ool improbable thai 

 an unusually large Great Chela Bhould be accompanied by an exceptional 

 Bmall Small Chela. Such, however, is not the case ; instead there is a 

 fairly close direct correlation, 0.774 , 



