ARABIAN CHEILODIPTERUS. 121 



as the back, shading at the edges into yellowish, 

 and in the centre of it, as terminating the lateral 

 line, there is a round black spot. The fins are of 

 a grayish tint, nearly formed as in the preceding 

 fish, the first dorsal with the anterior and upper 

 edge black. These fish seem also to reach only 

 a small size, and all those which are yet known 

 are banded longitudinally, as that now described. 

 Three species only are noticed. The first has eight 

 bands ; the second, as we have seen, from four- 

 teen to seventeen ; and the last, discovered near 

 the Society Isles by Lesson and Garnot, has five 

 black bands. C. quinquelineatus is only four 

 inches in length, of a silvery white ; the stripes 

 of deep black. 



Our next fish is very remarkable : it is 



