147 



x2TnTn 



"1mm. 



-LQ 



O 



-"Imm 



j-o "o 



g h i 



Fig. 55. Pygospio duhia. 

 a. Head. b. Third foot. c. Fifth foot. d. Tenth foot. e. Posterior foot. /. Capillary bristle 

 . Ventral hook. /;. Pygidium without anal sucker. Ventral view. /. Pygidumi with anal sucker. Dorsal 



view. 



19-2 



