U. S. NATIONAL MUSEUM 



BULLETIN 36, PL. XLVII 



Fig. 1. NARWHAL. Male. 

 Monodon monoceros Linne. 



(From Bell's British Quadrupeds, 2d edition, 1874, p. 435.) 



Fig. 2. NARWHAL,. Male. 

 Monodon monoceros LinnS, 



(From Bell's British Quadrupeds, 2d edition, 1874, p. 439.) 



Genus MONODON. 



