1. CH^TODON. 17 



The extent of the ocular band below the orbit is not very dis- 

 tinctly visible, 



inches, lines. 



Length without caudal 3 7 



Height of the body 2 1 



Length of the head 1 2 



of the fourth dorsal and of the second 



anal spine 11 



bb. Body with broad cross-bands. 

 25. Chaetodon falcula. 



moch, ix. p. 102. t. 426. f. 2 ; lil. Schu. p. 225 ; Cuv. &■ Val. vii. p. 41 

 Bleek. Batoe, p. 311. 



The snout is produced, pointed, and longer than the diameter of 

 the eye ; pra^operculum scarcely denticulated ; dorsal and anal fins 

 rounded postoiiorly. The ocular band is not mder than the orbit, 

 white-edged ; body with two black falciform bands, anteriorly white- 

 edged, the first from the anterior part of the dorsal fin to below the 

 lateral line, the second from the posterior part of the spinous dorsal 

 and from the anterior of the soft ; twelve or thirteen subvertical 

 violet stripes besides ; tail with a black cross-bar, white-edged ; the 

 soft dorsal and caudal with a blaclc intramarginal stripe ; anal with 

 a black margin. 



Sea of Batoe, 



2Q. Chaetodon dizoster. 

 Cuv. 8f Val. vii. p. 527 ; Cuv. Eegne Anim. III. Pom. pi. 39. f. 2. 



Snout produced, pointed, much longer than the diameter of the 

 eye ; the dorsal and anal fins with the posterior angle rounded. The 

 ocular band is rather narrower than the orbit and crosses the chest ; 

 the anterior and lower part of the body violet, the posterior and 

 upper yellow. Body crossed by narrow dark vertical lines ; a black 

 cross-band from the anterior three dorsal spines to below the lateral 

 line ; another black band from the posterior four dorsal spines along 

 the base of the soft dorsal to the back of the tail ; a black band round 

 the tail ; the vertical fins with a blackish inframarginal line ; ventrals 

 whitish. (Val.) 



Sea of Mauritius, 



27. Chaetodon octofasciatus. 



Klein, Miss. iv. tab. 9. f. 3 ; Seba, iii. 25. 12. 



Chaetodon octofasciatus L. Gm. i. p. 1262; Bl. tab. 2^5. f. 1; Bl. ScJm. 



p. 223 ; Cuv. ^ Val. vii. p. 17 ; Bk'fk. Verhand. Batav, Genootsch. 



xxiii. Chcetodont. p. 16. 

 Chaetodon octo-lineatus, Gronov. Syst. ed. Gray, p, 69, 



D, n. A. ^. L, lat, 50, L. transv, 12/24, 



The snout is obtuse, and equal in length to the diameter of the 



