UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 16, No. 24, pp. 439-512, plates 38-46 August 17, 1917 



ASCIDIANS OF THE LITTORAL ZONE OF 

 SOUTHERN CALIFORNIA 



WILLIAM E. RITTER and RUTH A. FORSYTH 



UNIVERSITY OF CALIFORNIA PRESS 

 BERKELEY 



