TRANSACTIONS OF SECTION D. 



893 



The first case of an asymmetrical distribution in animals which 1 ask you to 

 look at is the i'requency of variations in the size of part of the carapace of shore 



Fig. 2. 



Diagram showing the height (in inches) of each of 25,878 American recruits. 



crabs. The crabs measured were 999 females from the Bay of Naples. In this 



