UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 18, No. 2, pp. 27-43 December 12, 1917 



AN UNUSUAL EXTENSION OF THE DISTRIBU- 

 TION OF THE SHIPWORM IN SAN 

 FRANCISCO BAY, CALIFORNIA 



BY 



ALBERT L. BARROWS 



UNIVERSITY OF CALIFORNIA PRESS 

 BERKELEY 



