SEA-FISHERIES LABORATORY. 



115 



Table VIII. Age group frequency— October to December- 

 Mersey Estuary— Shrimp Trawl. 





< 



3 





[ 



II 



III 



IV 



Length. 





















c? 



? 



<? 



? 



<J 



? 



c? 



? 



<? 



$ 



4-5 



2 



2 



















5-5 



1 



2 





















0-5 



1 



1 





















7-5 





1 



5 



















8-5 





2 



8 



8 

















9-5 



2 





32 



46 



1 















10-5 







58 



79 



1 



2 













11-5 





1 



71 



90 

















12-5 







47 



72 



1 



1 













13-5 





1 



33 



52 



1 



1 













14-5 







24 



28 



4 



3 





1 









15-5 







18 



18 



5 



8 













16-5 







14 



14 



5 



5 













17-5 







3 



8 



7 



3 



1 











18-5 







2 



3 



11 



8 













19-5 







3 



2 



3 



5 













20-5 









1 



4 



6 













21-5 











3 



1 





1 









22-5 









1 



2 



3 





1 









23-5 











2 









i 







24-5 











2 



1 





2 









25-5 











1 



1 













26-5 











1 





1 











27-5 

























28-5 

























29-5 















1 











Totals ... 



6 



10 



318 



422 



54 



48 



3 



5 



i 





Table IX. Values of the Length-Weight Coefficient K. 1920. 





No. 



Nelson 

 Buoy. 



No. 



North 

 Wales. 



No. 



Mersey 

 Estuary. 



No. 



Menai 

 Straits. 





256 

 297 

 145 

 405 

 296 

 344 

 127 



1-020 

 1-059 

 1020 

 1-079 

 1-040 

 1-067 

 1-200 



249 

 148 

 131 

 147 

 296 

 335 

 211 



1-000 

 1-015 

 1-052 

 1047 

 1-039 

 1-016 

 1-034 



134 



286 

 81 

 31 

 178 

 354 

 434 



0-960 

 0-973 

 1-018 

 0-998 

 0-969 

 0-948 

 0-941 



48 

 28 

 33 

 81 



80 





July 



1-020 



August 



0-960 



September . . . 



October 



November 



December . . . 



1034 

 0-968 

 0-995 



