fl>alaeontoovapbical Society 1907- 



A MONOG^AJPiH 



OF THE 



BEITISH CAMBRIAN TRILOBITES. 



BY 



PHILIP LAKE, M.A., F.G.S., 



ST. JOHN'S COLLEGE, CAMBRIDGE. 



PART II. 



Pages 29-48; Plates III, IV. 



LONDON: 

 ERINTED FOR THE PAL.EONTOGRAPHICAL SOCIETY. 



1907. 



