Bulletin of the Museum of Comparative Zodlogy 



AT HARVARD COLLEGE. 



Vol. LXIII. No. 6. 



PACIFIC COAST POLYCHAETA COLLECTED BY 

 ALEXANDER AGASSIZ. 



By Ralph V. Chamberlin. 



With Three Plates. 



CAMBRIDGE, MASS., U. S. A.: 

 PRINTED FOR THE MUSEUM. ^ 

 November, 1919. 



