THE FISHES OP SAMOA. 347 



cinctly described as having the colors of Heniochus macrolepidotus reversed, black for white and white 

 for black. 



Life colors of a specimen from Apia, 3 bands dark brown, the first blackish, alternating with 

 white; yellowish tinged in places; the snout and lips orange; forehead dull orange with a black median 

 stripe; dorsal colored like the body, the posterior part and caudal dull yellowish; ventral black; anal 

 with a black, gray-edged ocellus in the center of the black area, most distinct in the young; long 

 dorsal spines black, the tips of the spines whitish. 



1164. Heniochus intermedius Steindachner. Pacific. 



Heniochus intermedius Steindachner, Sitz. Ak. Wiss. Wien 1893, 222, locality unknown. 



1165. Heniochus monoceros Cuvier & Valenciennes. Samoa (Gunther); Tahiti; East Indies. 

 Heniochus monoceros Cuvier & Valenciennes, Hist. Nat. Poiss., VII, 100, 1831, He de France. Gunther, Fische der 



Sudsee, 49, taf. 38, Samoa, Tahiti. 

 -Taurichthys monoceros, Bleeker, Atlas, Chset., 28, tab. Ill, fig. 3, Java. 

 This rare species is recorded by Dr. Gunther from Samoa. It was not seen by us. 



1166. Heniochus varius (Cuvier & Valenciennes). Samoa; East Indies. 



Taurichthys varius Cuvier & Valenciennes, Hist. Nat. Poiss., vn, 148, pi. 181, East Indies. 



Taurichthys varius Bleeker, Atlas, Chset., 27, tab. Ill, fig. 2, Batu, Java, Celebes, Timor, Amboina, Ceram, Banda. 



Taurichthys viridis Cuvier & Valenciennes, Hist. Nat. Poiss., vn, 152, Amboina. 



One specimen of this species was taken by us at Apia. Otherwise the species is not recorded from 

 Polynesia. Life colors, olive brown, blackish below where black streaks follow the rows of scales; 

 lips, head, and nape black; breast gray, not black, as figured by Bleeker; a grayish olive band to 

 front of spinous dorsal; a clear white bar from tip of long dorsal spine to lower base of caudal; dorsal 

 olive, the first spines dusky; caudal pale olive; ventral, anal, and pectoral black. 



HOLACANTHUS Lacepede. Alamu. 



Holacanthus Lacepede, Hist. Nat. Poiss., iv, 525, 1803. (H. tricolor; scales large; caudal forked.) 

 Genicanthus Swainson, Class. Fishes, n, 212, 1839. (G.lamarckii; scales large; caudal forked.) 

 Centropyge Kaup, Wiegmann's Archiv, xxvi, 138, 1876. (C. tibicen; erroneously saidftb have four 



anal spines.) 

 Chxtodonloplus Bleeker, Archiv Neerl. Sci. Nat., xn, 26, 1876. (C mesoleucus; isthmus broad.) 

 Acanlhoch;ctodon Bleeker, Archiv Neerl. Sci. Nat., xn, 5, 1876. (-1. lepklolepis; isthmus narrow; 



body elevated.) 

 Angelichthys Jordan & Evermann, Check-list of fishes, 420, 1896. (A. ciliaris.) 



Preopercle with a stout spine; dorsal spines 12 to 14. The species of this genus are almost all 

 gaudily colored and some of them reach a large size. They differ widely among themselves, but not 

 so as to permit generic subdivision. The different subgeneric groups — Holacanthus, with relatively 

 large scales and angular dorsal and anal; Angelichthys, with strong spines on the preopercle; Chselodon- 

 loplus, with very small scales and rounded dorsal and anal; Acanlltoclnelodon, with moderate sized 

 scales and elevated dorsal and anal — are recognizable groups. Another subgenus equally well marked 

 may be based upon Holacanthus jisheri, a species with strong spines on the preorbital. Most of the 

 species in the South Seas belong to the typical subgenus Holacanthus. 



1167. Holacanthus diacanthus (Boddaert). Aimeo; Alamu. Samoa; Paumotu Is.; Tahiti; New 



Guinea; East Indies. 



Chxtodon diacanthus Boddaert, De Cheet., 1772. 



Holacanthus diacanthus Gunther, Fische der Sudsee, 50, taf. 40, fig. B, Samoa, Tahiti, Paumotu. Bleeker, Atlas, 



Chset., 65. tab. VI, fig. 5, Celebes, Flores, Ceram, Java, Amboina, Timor, New Guinea, Banda. 

 Chxtodon fasciatus Bloeh, Ichth., tat. 195, 1788, after Boddaert. 

 Ctixtodon boddaerti Gmelin, SysL Nat., 1243, 1788, after Boddaert. 

 Chxlodon dux Gmelin, Syst. Nat., 1255, 1788, after Bloch. 



This lavishly gaudy fish is very common about the coral reefs of Samoa. About 16 specimens 

 were preserved from Apia and Pago Pago. Life colors of one from Apia, about 9 broad curved stripes, 

 pale blue with dark-blue edges, the interspaces deep orange-yellow, pale yellow below; another narrow 

 blue stripe at base of caudal; two others above eye; lips yellow; a blue curved streak below eye; 



