up to the time the fish is two or three years old, the liead does not show any pecuhar features, 

 but it then begins to de\-elop a mass ha\ing the appearance of a wart_\- tumor. In some specimens 

 the warts are of uniform size and very regular distribution, in others they are irregular in size and 

 shape. The warts are soft to the touch, and represent simply the enlargement of the normal 

 papillae of the skin of the head: and so far as known the mass does not take on any malignant 

 character. The amount of surface co\ered bv the growth \aries, and this, together witli differences 



in the warts themselves, gi\'es rise tij several sub\'arieties. In the lii')n-head proper the entire head 

 except the lower jaw is covered with large red, pink, or white waits, and the head and snout are 

 thus greatl)- broadened. In the form known as the tokin, or capped or ho<jded goldfish, there is on 

 top of the head a mass of warts projecting one-half to three-fifths of an inch abo\-e the surface and 

 sharplv defined all around. The \\art_\- growth is sometimes entirely white, and ma\- contrast 

 strongly with the colors of adjacent parts. Fish thus colorefl are called hiragashira, or white-heads. 

 As white warts are nearl}' always smaller than red warts and the growth is thus less ])rominent, 

 these fish are known also as shiraga^hira, or flal-heads. 



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