1. Cnj-ITODON. 9 



y. Adult : skeleton. Presented by the Zoological Society. 

 ^. Half- grown : sldn. From Gronov's Collection. 



Variety : A. ^. A round darker spot where the fourth band crosses 

 the base of the dorsal. 



e, C- Two inches and a half long. From the Collection of the Zoo- 

 logical Society. 



The skeleton is very much like that of Ch. strlgangulus ; the lower 

 limb of the prieoperculum, however, is considerably shorter than the 

 posterior. 



iO. Chaetodon bimaculatus. 

 Block, taf. 219. f. 1 ; Bl. Schn. p. 225 ; Cur. i^- Val. vii. p. 67. 

 D. i?, A. ^. L. lat. 34. L. transv. 6/15. 



The snout is produced, longer than the diameter of the eye ; pi-^e- 

 operculum finely denticulated ; the soft dorsal and anal fins angular 

 posteriorly. Body with indistinct oblique streaks ; the ocular band 

 is narrower than the eye, and reaches fj-om the neck to the inferior 

 margin of the interoperculum. A large round blackish blotch in the 

 middle of the base of the soft dorsal, another small one of deep black 

 colour at the top of its angle ; anal with an indistinct blackish mar- 

 ginal line. The remainder without ornamental colours, 



Atlantic coasts of Tropical America. 



a-f. Adult : skins. Jamaica. From Dr. ParneU's Collection. 



g, h. Adiilt and half-grown. From the Collection of the Zoological 



Society. 

 i. Adult From the Collection of the Zoological Society. 

 1c. Adult : bleached. Old Collection. 



11. Chaetodon biocellatus, 



Chaetodon biocellatus, Cuv. ^- Val. vii. p. 62 j Less. Voy. Duperr. Zooi. 



Puiss. p. 176 ; Bleelc. Boeroe, p. 403. 

 ocellatus, Bleek. (not Cuv. Sf Val.) Natuurk. Tydschr. Nederl. Ind. 



vi. p. 212. 



I>-5^- A.j52_. L. lat. 30. 



The snout is little produced, pointed, and shorter than the diameter 

 of the eye ; praeoperculum very indistinctly denticulated ; dorsal and 

 anal fins rounded posteriorly. The ocular band is somewhat narrower 

 than the orbit, and crosses the neck at some distance before the 

 origin of the dorsal fin ; there is a broad white band behind it ; a 

 broad triangxilar brown transyerse band from the anterior six dorsal 

 spines to the axil ; taU with a broad blackish-brown cross-band, 

 broadly edged with lighter anteriorly and posteriorly ; dorsal with a 

 blackish margin, and with a large round black, wliite-edged spot 

 between the fifth and fou^ tecnth rays ; anal brownish, with a broad 

 yellow band ; caudal with a blackish -brown cross-band near the 

 base ; ventrals miniitely dotted with brownish. 



Seas of Burn, Timor, and Oualan. 



