Photo by R. L. Coffin. 



Fig. 16. — Northern Spy. Blade large, somewhat folded and waved, upright, often 

 somewhat reflexed: serration.'; sharp, often curved (A). 



Pliolo hu li. L. Coihn. 



Fig. 17. — .Ioxath.\x. RIade very small, more or less folded, sometimes reflexed, narrow 

 at base and apex (.\); serrations moderatel.v sharp, coarse and irregular (B). 



