FOO D 



ITEMS 



PERCENT 

 50 



90 



_i 



ANIMALS 

 Annelid 

 Nereis sp. 

 Other 

 Mnllusk 

 Pelecypod 

 Mytilus edulis 

 Gemma g emma 

 M.yi arenar ia 

 Other 

 Gast rnpod 

 H ydrobia minuta 

 Other 

 Arthropod 

 Crab 



Small arthropod 

 Barnacle 

 Insect 



Fora min ifera 

 Fish 

 Other 

 PLANTS 

 Algae 

 S partina sp. 



UNIDENTIFIED 



STOMACHS with food 

 STOMACHS nearly empty 



FOOD 



ITEMS 



AVERAGE 



NUMBER 



CRABS LESS THAN 30n 



CRABS MORE THAN 30n 



Annel id 



Nereis sp. 



Other 

 Mollu s k 



Pelecypod 

 My tilus edulis 

 Gemma g emma 

 Myj arena ri a 

 Other 



Gast ronod 

 H ydrooia minuta 

 Other 



0.03 



.02 



.01 

 2.1 

 1.7 

 1.0 



.1 



.2 



.4 



.5 



.1 



0.07 

 .06 

 .01 

 1 5.3 

 10.2 



4.4 



3.4 



1.3 



1.1 



5.0 



4.5 

 .1 



TOTAL NO. of CRABS 



651 



3,328 



Figure '). — The average numbers of certain animals per .stomacli and the percentase freqneney of occur- 

 rence of fixKl items in small green crabs less than 30 mm. wide f shaded bars) and in large ones 

 30 mm. wide and larger (black bars). 



FEEDING HABITS OF GREEN CRAB 



191 



