6 TELEOSTEI. ACANTHOPTEHTGJI. 



edges, is wider below the orbit. A dark ocellus on the centre of 

 the middle dorsal rays. Anal with a fine black intramarginal band 

 having a white outer edge, upper and hind margins of the jmaL 

 edged with black ; on the caudal fin two fine vertical lines enclose 

 a semilunar space. 



Hob. From the Eed Sea, through the seas of India to Polynesia. 



730. (6.) Chsetodon chrysurus. 



Chj-etodon chrysurus, Desjardins, P. Z. S. 1833, p. 117. 

 Cheetodon Mertensii, Day, Fish. India, pp. 105, 747, pi. xxvii, fig. 2 

 (scales too small) (see synon.). 



D. 13/22-23. P. 15. A. 3/16. C. 17. L. r. 34/27. L.tr.5/14. 



Length of head 4^, height of body 2 in the total length. Eyes 

 diameter 3| in the length of the head, 1| diam. from end of 

 snout and also apart. Preopercle entire, its angle very oblique. 

 Fins dorsal spines increasing in length to the fifth, the soft 

 portion of the fin as high as the spinous and rounded posteriorly ; 

 caudal cut nearly square ; anal spines long, the third rather the 

 longest, exceeding the highest of the dorsal by nearly one fourth. 

 Colour head and anterior two thirds of the body lavender, 

 posterior third yellow ; interorbital space yellow ; a narrow dark 

 white-edged baud commences a little in front of the dorsal fin, 

 then ceases, but reappears a little above the eye, through* which 

 it descends and passes down the preopercle to a little in front of 

 the angle. Anterior two thirds of the body with narrow black 

 vertical bands, which at the middle of the body form an angle 

 directed forwards. A narrow dark intramarginal line with a white 

 outer edge on both dorsal and anal fins ; a narrow dark vertical 

 band in the last third of the caudal, followed by a rather wider 

 yellow one, externally the fin is grey. 



Hob. Ked Sea, Mauritius, the Malay Archipelago, and Pacific. 

 I have this species from Ceylon. 



731. (7.) Chsetodon kleinii. 



Chsetodon kleinii, Block, Ich. t. 218, fig. 2 ; Day, Fish. India, p. 106. 

 D. 13/22-25. P. 15. A. 3/18-20. C. 17. L.I. 33. L.tr.5/11. 



Length of head 4^, height of body nearly 2 in the total length. 

 Eyes -diameter 3 in length of head, 1 diain. from end of snout, 

 and 1| apart. Preopercle entire. Fins dorsal spines increasing 

 in length to fifth, soft portion of fin rounded and rather higher 

 than the spinous ; caudal rounded ; second and third anal spines 

 of about equal strength, their length about equal to the fifth 

 dorsal. Colour uniform brownish, becoming darkest posteriorly ; 

 a rather broad ocular band from in front of the dorsal fin, through 

 the eye over the pre- and interopercles to the base of the ventral 

 Jin ; a black band over the snout. Ventrals black ; edges of the 

 soft dorsal, anal, and caudal black. 



Hdb. Seas of India to the Malay Archipelago. 



