894 THE AMERICAN NATURALIST. |. (Vor. XXXIX. 
feature distinguishing these two muscles, which Vetter does not 
regard as separate. I believe that of this common mass of mus- 
cles the anterior straight fibers alone represent the true levator 
maxillae superioris, while the posterior curved fibers represent a 
f 


Fic. 2.— Dorsal muscles of Acanthias after removal of the skin. Am, adductor mandibularis; 
Csd 1-6, constrictores superiores dorsales; Lous, levator maxillæ superioris; y, tendinous 
mass back of eye; 7' trapezius. : 
dorsal constrictor. In this connection Vetter (74, pp. 420-421) 
says: “Die beiden Spritzlochknorpeln, welche fast senkrecht 
