406 



The Squamipinnes 



the Eocene genera, Aulorhamphus (bolceusis), with produced 

 snout, and Apostasis (croaticus], with long spinous dorsal, prob- 

 ably belong. 



The Moorish Idols : Zanclidae. The family of Zandid in- 

 cludes a single species, the Moorish idol or kihi kihi, Zanclus 

 canescens. In this family the scales are reduced to a fine sha- 



FIG. 342. The Moorish Idol, Zanclus canescens (Linnaeus). From Hawaii. 

 Family Zanclidae. (Painting by Mrs. E. G. Norris.) 



green, and in the adult two bony horns grow out over the eye. 

 The dorsal spines are prolonged in filaments and the color is 

 yellow crossed by bars of black. Zanclus canescens is a very 

 handsome fish with the general appearance and habit of a 

 Ch&todon, but the form is more exaggerated. It is found 

 throughout Polynesia, from Japan to the off-shore islands of 



