ARCUATED CILETODON. 341 



the dorsal and anal fin extend in a somewhat fal- 

 cated manner, as far as the end of the tail : the 

 body is covered with scales of moderate size, and 

 the gill-covers are destitute of spines. Native of 

 the American seas. 



ARCUATED CRMTODON. 



Chaetodon Arcuatus. C. nigricam,fasdis angustis, transversis, 

 drcuatis, niveis. 



Blackish Chaetodon, with narrow, arcuated, transverse snow- 

 white bands. 



Chaetodon arcuatus. Lin. Block, t. 201. f. 2. 



SHAPE of the body ovate ; dorsal and anal fin 

 yery broad, and terminating in sharpened or slightly 

 falciform extremities, but not extending so far as 

 the tail : colour of the whole fish very deep black- 

 brown, varied by arcuated milk-white transverse 

 bands, which are five in number ; the first passing 

 across the mouth, and the next across the thorax, 

 the two next across the body, dorsal, and anal fin, 

 and the last across the tail, which is also tipped 

 with a milk-white margin : gill-covers tipped with 

 a strong spine. Native of the South- American 

 seas : general length from three to six inches. 



