350 BULLETIN OF THE BUREAU OF FISHERIES. 



Family ZANCLID^. 



ZANCLUS (Commerson Ms.) Lacepede. 



Zanclus (Commerson Ms.) Lacepede, Hist. Nat. Poiss., iv, 473, 1803 (cornutus). 



Pomacanthus Lacepede, Hist. Nat. Poiss., iv, 1803, 517 (canescens, etc.). 



Zanclus Cuvier & Valenciennes, Hist. Nat. Poiss., vn, 102, 1831 (cornutus). 



Gonopterus Gronow, Cat. Fish., ed. Gray, 77, 1854 (mosrens). 



Gnathocenlrum Guichenot, Ann. Maine et Loire, ix, 1866, 4 (centrognaihum; young). 



1181. Zanclus canescens (Linnaeus). Tifltifi; Galafa. Hawaii; Samoa: Papua; Waigiu; Woodlark 

 , I.; East Indies; Revillagigedo Is. 



Chsetodon canescens Linnaeus, Syst. Nat., ed. x, 272, 1758, Indies; after Artedi, younj. 



Pomacanthus canescens Lacepede, Hist. Nat. Poiss., IV, 517, 1803. 



Zanclus canescens Gunther, Cat., II, 493, 1860. Bleeker, Atlas, 78, tab. v, fig. S, 1877-8, Celebes, Amboina. Jordan & 



Fowler, Proc. U. S. Nat. Mus., 549, 1902, Misaki (Japan). 

 Chsetodon cornutus Linnaeus, Syst. Nat., ed. x, 273, 1758 after Artedi, adult. Lacepede, Hist. Nat. Poiss., iv, 473, 



1S03, pi. 2, fig. 1. Jordan & Evermann, Fish North and Mid. Amer., n, 1687, 1898. 

 Zanclus cornutus Cuvier & Valenciennes, Hist. Nat. Poiss., VII, 102, pi. clxxvii, 1831. Bleeker, Atlas, 77, tab. IV, figs. 



1, 2, 1877-8, Sumatra, Java, Celebes, Ceram, New Guinea, Waigiu, etc. 

 Zanclus centrognalhus Cuvier & Valenciennes, Hist. Nat. Poiss., VII, 528, 1831, near equator, 75 E. 

 Gonopterus marens Gronow, Cat. Fish., ed. Gray, 77, 1854, India. 

 Chsetodon nudus Gronow, Cat. Fish., ed. Gray, 76, 1854, Mari indico. 

 Zanclus montrouzieri Thiolliere, in Montrouzier, Fauna Woodlark, 168, 1857, "Woodlark I. 



This species is everywhere common throughout the Pacific Ocean, from the off-shore islands of 

 Mexico to Hawaii and southern Japan. We have 20 examples from Apia and 3 from Pago Pago. 



Family ACANTHURIDiE. 



HEPATUS Gronow, 1763. 



(Teuthis Linnseus, 1766; Harpurus Forster; Acronurus Gronow, 1854.) 



1182. Hepatus achilles (Shaw). Pone i'umumu. Hawaii; Samoa; Marcus I.; Rarotonga and 



Makatea (Seale). 

 This beautiful fish is rare about Samoa, as about Hawaii. We have two large specimens from 

 Pago Pago and one from Apia. The red tail-patch is very brilliant in life. 



1183. Hepatus aliala (Lesson). Alamea samasama; Loata. Oualan; Samoa; New Guinea; Guam; 



Clarion Is. 



This well-marked species is not rare about Samoa. We have ten specimens from Apia and Pago 

 Pago. It is found, also on the off-shore islands of Mexico. 



Life colors of a specimen from Apia, called alamea samasama, olive-black; pure black in front; 

 dorsal dusky mottled olive with black and blue edge, and a bright yellow line at base, which widens 

 and covers most of last ray of dorsal; caudal drab gray with a pale violet-gray edge and a golden cres- 

 cent; spine golden; anal like dorsal in color; pectoral and ventral blackish, both edged with grayish 

 blue, edged in front with sky-blue; a whitish patch below eye and a white ring around throat behind 

 chin; edge of opercle light golden olive. 



1184. Hepatus olivaceus (Bloch & Schneider). Tahiti; Paumotu Is.; Samoa; Palauls.; Hawaii; 



New Guinea; East Indies. 



This species, easily recognized by the mark at the shoulder, is frequently taken about Hawaii and 

 Samoa. We have 5 examples from Samoa. 



Color in life of a specimen from Apia, lemon-yellow, olive-shaded above; fins all yellow with dark 

 edgings; axil and tip of caudal bright orange-yellow; a blackish brown stripe on pectoral, extending 

 to its middle, without edging in young. Another specimen from Apia was black, with orange-black 

 edged stripe, and a third was bright brownish yellow, the black stripe mesially bright oiange. 



1185. Hepatus pyriferus (Kittlitz). Ulea. 



Acanthurus pyriferus Kittlitz, Senckenberg Museum, 1, 193, taf. 12, fig. 2, 1834, Ulea. Gunther, Fische der Sudsee, 



113. 

 Acanthurus armiger Cuvier & Valenciennes, Hist. Nat. Poiss., x, 234, 1835. 



This species is unknown to us. 



