OUTLINES OF ICHTHYOLOGY. 173 



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



B B. Teeth on right and left 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 acicular, 

 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, setiform, or brush-like ; if 

 still coarser and curved, card-like. When much 

 shorter than the last-named they become raduli- 

 form, or rasp-like. 1 



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. 



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



