344 



BAT CH^TODON. 



Ghsetodon Vespertilio. C. albidus, corpore deoato-orbiculari^ 



pinna dorsali analique maximis,falcatis. 

 Whitish Chaetodon, with high-orbicular body, and extremely 



large falcated dorsal and anal fin. 

 Chaetodon Vespertilio. Lin. Block, t. }QQ.f. 2. 



A very singular species,, and the most remark- 

 able of all others for the vast extent as well as 

 breadth of the dorsal and anal fin, both which nearly 

 equal the body itself in size, and are of a somewhat 

 triangular shape, the points extending, both above 

 and below, to about the same distance with the tip 

 of the tail : the body in shape bears a considerable 

 resemblance to some of the silvery Dories, the head 

 sloping suddenly down and the general form being 

 similar : the colour silvery, with rather small scales : 

 the base of the tail marked by a black bar : native of 

 Japan : length of a specimen figured by Dr. Bloch, 

 about four inches from head to the end of the tail, 

 but the depth, measured from the opposite tips of 

 the dorsal and anal fins, about six inches and 

 half. 



