406 The Squamipinnes 
the Eocene genera, Aulorhamphus (bolceusis), with produced 
snout, and A postasis (croaticus), with long spinous dorsal, prob- 
ably belong. 
The Moorish Idols: Zanclide.—The family of Zanclide in- 
cludes a single species, the Moorish idol or kihi kihi, Zanclus 
canescens. In this family the scales are reduced to a fine sha- 
— 
Fie. 342.—The Moorish Idol, Zanclus canescens (Linneus). From Hawaii. 
Family Zanclide. (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 
Chetodon, but the form is more exaggerated. It is found 
throughout Polynesia, from Japan to the off-shore islands of 
