SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 

 Bulletin 103 



CONTRIBUTIONS TO THE GEOLOGY AND PALEON- 

 TOLOGY OF THE CANAL ZONE, PANAMA, AND 

 GEOLOGICALLY RELATED AREAS IN CEN- 

 TRAL AMERICA AND THE WEST INDIES 



BRYOZOA OF THE CANAL ZONE 

 AND RELATED AREAS 



By FERDINAND CANU 

 Of Versailles, France 



AND 



RAY S.^ASSLER 



Of Washington, District of Columbia 



Extract from Bulletin 103, pages 117-122, with Plate 53 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1918 



rr~ s\ — » 



