UNIVERSITY OF CALIFORNIA 



Bulletin of the Department of Geology 



Vol. 2, No. 4, pp. 109=118. ANDREW C. LAWSON Editor 



THE 



Distribution of the Neocene Sea-urchins 



OF 



Middle California 



AND 



Its Bearing on the Classification of the 

 Neocene Formations 



BY 



JOHN C. MERRIAH 



BERKELEY 

 PUBLISHED BY THE UNIVERSITY 



MAY, 1898. 



PRICE, 10 CENTS 



