430.7 

 P3D4?, 



Mai. 



■npool -Oftaiinc BioloQv; (Toininittce. 



L.M.B.C. MEMOIRS 



ON Typical British Marim-: Plants *■ Animals 



EDITED BY W . A. HERDM.4N. D.Sc, F.R.S. 



XVIl. 



PECTEN 



W. J. DAKIN, M.Sc, 



:/ Exhthition Sihc.'nr in /oology, Uiiivvisity of Liverpool 



(With 9 Plates) 



Price Four Shillings and Sixpence 



LONDON 



Williams & Norgate 

 Jan'iarv. 1909 



# 



