REPORT 



OF THE 



CANADIAN ARCTIC EXPEDITION 



1913-18 



VOLUME VIII: 

 MOLLUSKS, ECHINODERMS, COELENTERATES, Etc. 



PART J: PORIFERA 



By A. DENDY and L. M. FREDERICK 



OTTAWA 



F. A. ACLAND 



PRINTER TO THE KING'S MOST EXCELLENT MAJESTY 



1924 



Issued July 5, 1924 



