THE 



BASHFORD DEAN MEMORIAL VOLUME 



ARCHAIC FISHES 



Edited By 

 EUGENE WILLIS GUDGER 



Article IV 



THE STRUCTURE OF DIMCHTHYS 

 A CONTRIBUTION TO OUR KNOWLEDGE OF 



THE ARTHRODIRA 



By ANATOL HEINT2 



Curator of the Paleontological Museum 



Oslo, Norway 



NEW YORK 

 PUBLISHED BY ORDER OF THE TRUSTEES 

 Issued June 15, 1932 



