42 tJ'arAMiPiN'NEs. 



orbit, conical and lioin-likc in adnlt specimens, scarceh/ visible in 

 yoniiger ones ; a third, obtusely conical, on the nape of the neck. 

 A black band from the origin of the dorsal, occupying the Avhole 

 head to tlu^ prscopercular margins ; the second black band nearly 

 entirely suppressing the ground colour, from the third to the seventh 

 dorsal spines to the belly, and extencUng from the I'oot of the pec- 

 torals and ventrals to the end of the anal, which, like the ventrals, 

 is entirely black. 

 Molucca Sea. 



a. Adult. Molucca Sea. 



b. Half-grown. Ambojiia. Piu'chascd of Mr. Frank. 



c. Very fine specimen. Amboyna. Purchased of Mr. Frank. 



4. HOLACANTHUS*. 



Ilolacanthus, Laccp. iv. p. 525 ; (Juv. ^- Vul. vii. p. 153. 



Body compressed, and generally much elevated. Praeoperculum 

 with a strong spine at the angle. One dorsal, entirely scaly, with 

 twelve to fifteen spines ; the anal with three (exceptionally with 

 four). No teeth on the palate. Scales of moderate or small size. 

 Six branehiostegals ; air-bladder with two posterior horns ; pyloric 

 appendages in increased number. 



Inhabitants of nearly aU the tropical seas. 



The species may be grouped together as follows : — 



I. Species with scales of moderate size. 

 A. With longitudinal bands, p. 42. 

 E. Trunk with a whitish vertical blotch or band, p. 45. 



C. Body ornamented by several cross-bands, p. 4(5. 



D. Body uniform or bicoloured, or merely spotted, p. 49. 



fl. Species with small scales. 



A. Body with longitudinal bands, p 52. 



B. Body with white or bluish transverse lines, alternately broader and 



narrower, p. 52. 



C. Body without bands, p. 54. 



I.' Species with the scales of modovjite size. 

 A. With longitudinal bands. 



1 . Holacanthus annularis. 



Chsetodon annularis, lU. tab. 215. f. 2; L. Cim. p. 1202: lil Schi. 



•p. 21'J; Shaw, Zool. iv. p. 330. pi. 47. 

 Ilolacanthus annularis, Lacvp. iv. pp. 520, 533 ; (Jur. i<f Val. \n. p. 178 ; 

 Ccmt. Catal. p. 1()4; Block. Vi-rh. Bat. Gen. xxiii. (Jicttod. p. 20. 



* 1. Holacanthus mokhella, {FArcnh.) Cur. <^ Val. vii. p. 177. — Red Seu. 



2. flavissiinus, Cur. ^- Val. vii. p. l'.)7. — Island of U lea. 



3. luteolus, (Par/cin.s.) Cur. iS Val. vii. |i. I!)8. - Ofalioitc. 



