1. CILETODON. 11 



e. Young. China Seas. Presented by Captain Su- E. Belcher. 

 /, (J. Adult : stuffed. Purchased. 

 h. Half-grown : stufled. 



hb, A round black or wliito spot on each side of the body. 

 15. Chsetodon tallii. 

 Bleeher, Banda, iii. p. 97. 



D.iH. A.,^. L.lat.25. 



The snout is pointed; the praeoperculum not denticulated; the 

 dorsal and anal fins rounded posteriorly. The ocular band is as 

 wide as the orbit, extends from the origin of the dorsal to the throat, 

 and is edged with white. Body with oblique blackish transverse 

 stripes ; on each side of the back, below the anterior half of the soft 

 dorsal, a blackish blotch ; tail with a broad blackish cross-band ; 

 dorsal with a narrow black margin ; ventrals and caudal transparent 

 \iolet. {Bl.) 



Sea of Banda Neira. 



16. Chaetodon unimaculatus. 



Block, t. 201. f. 1 ; Bl. Schn. p. 221; Cut: Sf Val vii. p. 72; Cuv. 

 Itegne Anim. Ill.Poiss. pi. 39. f. 3 (not good); Bleek. Banda, i. p. 241. 



D. |. A. |. L. lat. 46. L. traasv. 8/19. Vert. 10/14. 



The snout is very slightly produced, and rather longer than the 

 diameter of the eye ; prgeoperculum not denticulated ; the dorsal 

 and anal fins rounded posteriorly. The black ocular band is con- 

 tinued over the chest, and as broad as the diameter of the eye ; a 

 narrower vertical band over the posterior margins of the dorsal and 

 anal, and across the tail ; a large round black spot on the lateral 

 line, below the six posterior spines ; the remainder of the body and 

 the fins uniform. 



Molucca Sea ; Polynesia. 



fl. Fine specimen. Amboyna. Purchased of Mr. Frank. 

 h. Adult : skeleton. Amboyna. Purchased of Mr. Frank. 

 c. Adult : bleached. Old Collection. 



The skeleton differs from that of Ch. strigcingulus in the following 

 points : — The bones are more elongate in the vertical du-ection ; the 

 length of the lower limb of the prajoperculum is nearly one-half that 

 of the posterior ; the operculum is thi'ee times as high as ^vide. The 

 cavity for the pectoral muscles is rather shallow, but very broad. The 

 interior of the thi-ee lameUse of the jnibic bones is the most developed, 

 the inferior the least, but posteriorly with a swelling for the articula- 

 tion of the ventral spine. The length of the abdominal portion of the 

 vertebral column is very little less than that of the caudal ; the first 

 interha^mal is very long, as long as the fii'st seven vertebra; together. 



