CAT. CHAETOPODA BRIT. MUS.I. 



Prost. 



N.OJ 



Plate I. 



Fig A. x2. 



Prost. 



Fig. 2. *3. 



A.K Maxwell del. 



Arenicola marina (Linnaeus) 

 Ltghb-and dark- coloured examples. 



E.Wflson,Cambndge 



