132 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
Number of rays in left pectoral fin : 
562° gf , 498 9 2 y2=£5 : n=0.- P= 04s 
Number of rays in right pectoral fin : 
562. gf, 497 2 : y2—10-083 : n—6 > Pee 
These figures of Duncker’s do not seem to point to any 
necessity of separating the sexes in this case. In the case 
of the herring, the numbers are too few to base any reliable 
conclusions upon, but I think that for the present it may 
be regarded as legitimate to group the two sexes together 
for the purposes of the above comparison. 
