108 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



CHAETODON SELENE Bleeker 



Chaetodon selene Bleeker, Nat. Tijds. Nederland. Indie, vol. 5, 1853, p. 76. 

 Lawajong, Solor. — Guntheb, Cat. Fish. Brit. Mus., vol. 2, 1860, p. 30 

 (Amboina). — Martens, Preuss. Exp. Ost-Asien, 1876, p. 388 (Yoko- 

 hama). — BouLENGER, Proc. Zool. Soc. London, 1887, p. 657 (Muscat, East 

 Arabia). — Evermann and Seale, Bull. Bur. Fish., vol. 26, 1906 (1907), p. 

 96 (Bulan). — Zugmayer, Abh. Bayer. Akad. Wiss., Math.-Phys. Kl., vol. 

 26, abth. 6, 1913, p. 11 (Oman).— Ahl, Arch. Naturg., vol. 89, abth. A, 

 Heft 5, 1923, p. 119 (no locality). — Herre and Montalban, Philippine 

 Journ. Sci., vol. 34, No. 1, September, 1927, p. 54, pi. 10, fig. 1 (Puerto 

 Galera, Bulalacao Bay). 



Tetragonoptrus (Chaetodontops) selene Bleeker, Atlas Ichth. Ind. N^erland., 

 vol. 9, 1877, p. 44, pi. (15) 377, fig. 5 (Celebes, Solor, Amboina). 



Depth 1% to 1^; head 2% to 3, width 2J^ to 2%. Snout 2}4 to 

 2}4 in head from upper jaw tip; eye 3% to 33^, 1% to 1% in snout, 

 Httle greater than interorbital in young to equal to interorbital with 

 age; maxillary ^to%oi snout, 33^ to 3^ in head; interorbital Z% 

 to 4, broadly convex. Gill rakers 4 + 13, short points, 3^ of gill 

 filaments, which 1/^ in eye. 



Scales 32 to 34 between gill opening and caudal base; tubes 28 to 

 30 in lateral line; 7 scales above lateral line, 13 or 14 below. Scales 

 with 15 to 19 basal radiating striae; apical denticles 115 to 160, with 

 10 to 17 transverse series of basal elements; circuli fine. 



D. XII, 20, I or 21, i, fourth spine 2 to 2}/^ in total head length, 

 fourth ray 1^ to 1;^; A. Ill, 18, i or 19, i, third spine 1% to 2, fourth 

 ray 1^^ to \%; least depth of caudal peduncle 3 to 33^; caudal with 

 hind edge slightly lunate or emarginate, 13>^ to 13^; pectoral 13^3 to 

 1%; ventral 1% to 1%. 



Largely pale or yellowish brown, each scale above lateral line before 

 its arch with small, pale, median spot. Brown band, narrow at first, 

 along base of spinous dorsal and soft dorsal, when broader across tail 

 and front of caudal peduncle down along soft anal base, where nar- 

 rowing. Below lateral line each scale with narrow slightly darker 

 line following in median course of scale rows. Brown band from pre- 

 dorsal down to eye with pale bordering line in front and behind; 

 below eye pale band across cheek, narrowing below. Broadly pale 

 diffuse interocular band. Soft dorsal and anal each with broad pale 

 edge and submarginal dark hue. Caudal broadly whitish behind, 

 inner edge with brown line next to pale diffuse streak which little 

 more arched. 



East Indies, Philippines. Bleeker had 9 specimens from 3 local- 

 ities, the largest 160 mm. The species is quite constant and shows 

 but slight variation. 



A506. Balukbaluk Island. September 12, 1909. Length 153 mm. General 

 color of side silvery gray, slight olivaceous shade above and somewhat lavender 

 below, without yellow shown in Bleeker's plate. Ocular band blackish above, 

 broadly bordered with orange behind running broadly into nape; below edge 



