70 
PISCES THORACICI. CHyETODON. 
than the head, with fillets of darker azure than those on the body; the pectoral yellow; the ventral fins striped 
sky blue, yellow and brown. There are three transverse fillets of light blue on the tail, but the fin is perfectly 
white with only an elegant narrow edging at the end. 
In a smaller subject the head was cinerious; the yellow colour of the body darker, and the azure fillets 
brighter; but their shape, nor that of the mark on the shoulder did not vary. 
Feet. Inches. Lines. 
Length, from the rostrum to the caudal fin - -- -- -- 1 o o 
of the caudal fin-------------o 1 8 
Greatest breadth of the body - -- -- -- -- -- -o 8 o 
Breadth of caudal fin at the base ---------- o l 8 
at the end - ------- - o g o 
REMARKS. 
The present subject bears a strong resemblance to the Chaetodon Annularis,* but differs principally in two 
circumstances: the one, the setaceous elongation of the dorsal fin, resembling that of the Chaetodon Setifer;-f- 
the other, (less material) in the remarkable ring on the shoulder being rather square than of a circular 
figure. 
The genus Chaetodon may be reckoned of all others the most numerous. It is supposed to comprehend above 
eighty species; though all of these have not been exactly described, and drawings of many are still wanting. 
To twenty-three species known to Linnaeus, forty have been added in Gindin 1 s edition of the Systema Naturae; 
and among other new ones since collected by Bloch, are three or four beautiful species received from Tranquebar. 
The greater part now known to naturalists have been furnished by the East Indies; but the American seas, 
besides possessing in common many of those, has a peculiar claim to others. 
Chast. Setifer, PI. 426. 
* Linn. Ed. Gmel. p. 1263. 
t Bloch, PI. 426, 
-Falcula, ib. 
-Maculatus, PI. 428. 
