PLATE XXXVIII. 



PAGE. 



Supposed clavicular element or portion of the shoulder-girdle of Titanichthys or of Dinich- 

 thys. The measurements of this plate are 20 by 17 inches exclusive of the separate 

 bone. The smaller figures represent homologous plates of a smaller species, prob- 

 ably of Diiiichthys 60J 



