FISHES OF THE PHILIPPINE AND ADJACENT SEAS 157 



Chaetodontoplus Bleeker, Arch. Neerland. Sci. Nat., vol. 12, 1876, p. 307. 



Type Holacanthus septentrionalis Schlegel, orthotypic. 

 Acanthochaetodon Bleeker, Arch. Neerland. Sci. Nat., vol. 12, 1876, p. 308. 



Type Holacanthus annularis LacepJide, orthotypic. 

 Angelichthys Jordan and Evermann, Rep. U. S. Fish Coram., pt. 21, 1895 



(1896), p. 420. Type Chaetodon ciliaris Linnaeus, orthotypic. 

 Xiphypops Jordan and Jordan, Mem. Carnegie Mus., vol. 10, 1922, p. 64. 



Type Holacanthus fisheri Snyder, orthotypic. 



Body ovoid, oblong ovoid or subrhomboid, rather robust. Hind 

 preopercle edge serrate and with large spine at angle below, which 

 usually grooved. Short interopercle with strong spines. Scales small, 

 roughened and usually with many small ones intermixed, in 50 to 90 

 series transversely on body. Though lateral line usually concurrent 

 with profile of back and complete to caudal base, mostly inconspic- 

 uous. Dorsal spines strong, 12 to 15, graduated usually to last which 

 longest. Soft dorsal and anal usually rounded, sometimes pointed, 

 only occasionally former ending in filament posteriorly. Caudal 

 mostly rounded. Ventrals usually little longer than pectorals. 



Among the most handsome of coral reef fishes the members of this 

 genus are rather noteworthy for the richness of their colors, though 

 frequently gaudy and of beautiful design. Some are among the most 

 extreme in contrast of colors of all fishes. 



Besides the numerous species listed below, 2 ?niali examples 10 

 to 13 mm. long from Varadero Bay, July 22, 1'J08, are evidently 

 the young of some species of Holacanthus, apparently at present 

 unidentifiable. 



