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. BASSLER 



Of Washington, District of Columbia 



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



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1918 



