358 



RHOMBOID CHJETOD0N. 



i 



Chaetodon Rhomboides. C. corpore rhombeo-ovato, supra 



cceruleo-virescente, subtus flavcsccnte, aculeis analibus duobus, 



dorsalibus quirtque, 

 Chaetodon with rhombic-ovate body, greenish-blue above, 



yellowish beneath, two spines before the anal fin, and five 



before the dorsal. 

 Chaetodon rhomboides. Block, t. 20$. 



Of a broader shape in proportion to its length 

 than the former, and with a much larger and 

 blunter head : colour on the upper parts grey or 

 greenish blue, on the sides white, and on the ab- 

 domen pale yellow : the blue of the upper parts 

 breaks into the white of the sides, in two or three 

 acuminated bars or fasciae reaching almost to the 

 abdomen : the dorsal and anal fin are shaped as in 

 the preceding species, but are much shorter, the 

 points not reaching beyond the base of the tail, 

 which is very widely forked : both fins and tail are 

 blue, tinged with yellow at the base : pectoral and 

 ventral fins yellow : scales moderately large : a few 

 strong spines at the origin of the dorsal fin, but 

 none on the gill-covers. Native of the American 

 j^eas, where it grows to a very considerable size, * 



