CAT. CHAETOPODA BRIT. MUS. I . 



Plate IX. 



S.P-- 



-S.P. 



Arenicola branchlaLis. 

 Aiuiouin & Edwards. 



ArenlcolOL ecaudLcLta Johnston. 

 Male specimen. 



A. K.Maxwell del. 

 E.Wilson, Cambridge. 



