REPORTS ON THE COLLECTIONS OBTAINED BY ALLAN HANCOCK PACIFIC EXPEDITIONS 

 OF VELERO III OFF THE COAST OF MEXICO, CENTRAL AMERICA, SOUTH AMERICA, AND 

 GALAPAGOS ISLANDS IN 1932, IN 1933, IN 1934, IN 1935, IN 1936, IN 1937, IN 1938 

 IN 1939, IN 1940, AND IN 1941, AND VELERO IV IN 1949-1952 OFF THE ' COAST OF 

 MEXICO AND SOUTHERN CALIFORNIA. 



BRYOZOA OF THE PACIFIC COAST 

 OF AMERICA 



Part 3, Cyclostomata, Ctenostomata, 

 Entoprocta, and Addenda 



BY 



RAYMOND C. OSBURN, Ph.D., D.Sc. 



