FISHES OF THE PHILIPPINE AND ADJACENT SEAS 185 



extend backward beyond the end of the tail. Bleeker had but 2 

 examples 220 to 326 mm. long. In our small examples the head as 

 well as the trunk is often pale in contrast with the rest of the 

 body. Superficially the adult coloration, in pattern, is quite sug- 

 gestive of the American Pomacanthus arcuatus. Our smallest exam- 

 ple also shows a narrow gray-white line from occiput to base of pre- 

 opercle spine and then back to ventral origin, bluish median Ime on 

 front, one from occiput to front eye edge and down over front of 

 cheek, also one vertically down on opercle posteriorly. 



8936. Atulayan Island, Lagonoy Gulf. June 18, 1909. Length 230 mm. 



8839. Maculabo Island. June 14, 1909. Length 212 mm. 



3910. Makesi Island, Palawan. April 5, 1909. Length 148 mm. [1497]. 



7087. Port San Pio Quinto, Camiguin Island. November 11, 1908. Length 



234 mm. 

 11401. Sabtan Island, November 8, 1908. Length 123 mm. 

 9120, 9121. San Roque, Leyte Island. July 29, 1909. Length 155 to 187 mm. 

 A616. Singaan Island. September 21, 1909. Length 233 mm. 

 A1458, A1459. Kait Point, Libani Bay, Celebes. December 29, 1909. Length 



395 to 410 mm. 

 A1580. Soo Wan, Eastern Formosa. January 29, 1910. Length 178 mm. 



HOLACANTHUS SEMICIRCULATUS Cnvier 



Hnlacanthus semicirculatus Cuvier, Hist. Nat. Poiss., vol. 7, 1831, p. 191, p. 

 183. Timor, Buru, Waigui, Port Praslin, New Ireland. — Lesson, Voy- 

 Coquille, Poiss., vol. 2, pt. 1, 1830 (1831), p. 173, pi. 30, fig. 3 (Port Praslin, 

 New Ireland; Offack Bay, Waigiu; Cajeli Bay, Buru). — Gtjnther, Cat. 

 Fish. Brit. Mus., vol. 2, 1860, p. 53 (Fiji, Amboina). — Martens, Preuss. 

 Exp. Ost-Asien, 1876, p. 388 (Amboina). — Meyer, An. Soc. Espanola, 

 Hist. Nat. Madrid, voL 14, 1885, p. 18 (Rubi, New Guinea). — Elera, 

 Cat. Fauna Filipin., vol. 1, 1895, p. 489 (Mindoro). — Jatzow and Lentz, 

 Abh. Senckenb. Naturf. Ges., vol. 21, Heft 1, 1897, p. 503 (Bawiklippe, 

 Zanzibar). — Beaufort, Bijd. Dierk., Amsterdam, vol. 19, 1913, p. 125 

 (Saonek, Waigui). — Weber, Siboga Exp., vol. 57, Fische, 1913, p. 311 

 (Lombok, Saleyer, Amboina, Elat, Rotti). — Pellegrin, Bull. Soc. zool. 

 France, vol. 39, 1914, p. 227 (Di6go Suarez, Madagascar). — Ogilby, Mem. 

 Queensland Mus., vol. 3, 1915, p. 110 (Queensland). — Herre and Mon- 

 talban, Philippine Journ. Sci., vol. 34, No. 1, Sep. 1927, p. 100, pi. 19, 

 fig. 1 (Palawan). 



Holncanthus nicobariensis var. semicirculatus Day, Fishes of India, pt. 1, 

 1875, p. 112, pi. 28, fig. 6. 



Acanthochaetodon semicirculatus Bleeker, Atlas Ichth. Ind. N6erland., vol. 

 9, 1877, p. 69, pi. (8) 370, fig. 5 (Sumatra, Java, Celebes, Timor, Buru, 

 Coram, Amboina, Goram, Waigiu). 



Holacanthus semicircularis De Vis, Proc. Linn. Soc. New South Wales, vol. 

 9, 1884, p. 457 (Queensland). 



Holacanthus alternans Cuvier, Hist. Nat. Poiss., vol. 7, 1831, p. 193. Mada- 

 gascar. — Playfair, Fishes of Zanzibar, 1866, p. 38 (Zanzibar and Aden). — 

 Pellegrin, Bull. Soc. zool. France, vol. 39, 1914, fig. 227 (Fort Dauphin, 

 Madagascar). 



Holacanthus coeruleus (Ehrenberg) Cuvier, Hist. Nat. Poiss., vol. 7, 1831, 

 p. 194. Massaua. — Klunzinger, Fische Roth. Meer., 1884, p. 61. 



