188.=).] 



MR. .T. B. SUTTON ON HYPERTROPHY. 



Fig. 3. 



437 



The dental series of a Wild Boar, showing the singular curve of 

 the upper canine. 



Head of Wart-Hog, Thacochcerus athiopints, ^ , showing a greater degree of 

 curvature of the upper canine than that presented by the Wild Boar's 

 tusk. 



Fi?. .5. 



Sliiill of Bahinisa, showing the most exaggerated stage of curved canines. 



Proc. Zool. Soc— 1885, No. XXIX. 29 



