U. S. NATIONAL MUSEUM 



PROCEEDINGS, VOL. 41 PL. 54 



From the type. Three-fourth.s natural size. 



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Section of sliin from flank, sliowing 

 dermal denticles, enlarged. 



Teeth, enlarged, a, front view of teeth 

 in upper jaw; 6, same, lower jaw; 

 c. side view of teeth in upper jaw. 



Squaliolus laticaudus. 



