fi>alaeontoovapbicat Society 1920. 



A MONOGRAPH 



OF THE 



BRITISH PALEOZOIC 



ASTEEOZOA 



BY 



W. K. SPENCER, M.A., D.Sc, F.G.S. 



PART V. 



Pages 197—236; Plates XIV— XVII. 



LONDON: 

 PRINTED FOR THE PAL^ONTOGRAPHICAL SOCIETY. 



July, 1922. 



