OUTLINES OF ICHTHYOLOGY. 



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A. Teeth on vomer, or central bone in the roof of the moutli. 



R B. Teeth on right and \zi^. palatine bones. 



c. Row of hooked teeth on each side of the tongue. 



D D. Teeth on superior maxillary, or maxillary bones. 



E E. Teeth on lower jaw, or inferior maxillary bones. 



There are also in Ichthyology technical names 

 for teeth of different shapes. The teeth commonly 

 found in carnivorous fish, for example — slender 

 elongated cones in form— are termed acicjihir, 

 where stouter, subulate. If teeth are hair-like, and 

 short and densely crowded, they are said to be 

 villiform ; if longer and equally slender, ciliiform ; 

 if stronger and stiffer, sctiform, or brush-like ; if 

 still coarser and curved, card-like. When much 

 shorter than the last-named they become raduli- 

 forin, or rasp-like.^ 



Conical teeth longer and stronger than the others 

 on the jaw are named canines; and those with 

 broad flat crowns, molars, which is the name given to 

 the large flat teeth of the Carp, already referred to. 



' Yarrell's " British Fishes." J. Van Voorst. 



