CHART showing the distribution and relative frequency of Larval and young Crustacea in the Firth of Forth, as indicated by the records of these organisms in the Lists of 



tow net gatherings referred to in the preceding notes. 

 Black Lines = Young Decapod Crustacea (chiefly) ; Ked Lines = Young Balani . Thick Lines = Bottom tow net ; Thin Lines = Surface tow net. 



PLATE VI, 



