922 THE AMERICAN NATURALIST. [Vor. XXXIX. 

Fic. 15.— Raia, ventral view, after removal of the skin ; right half more deeply dissected. Cac, 
as. y Moses | libulari Cm, 
= hi 
coraco-arcualis communis; CB. 

7, coraco H , y > ’ 
coraco-mandibularis ; Csv 7, constrictor superioris ventralis ı; DÆ, depressor hyoman- 
dibularis; Dr, depressor rostri; /nfór 7-3, interbranchiales. 
