FISHES OF THE PHILIPPINE AND ADJACENT SEAS 137 



Chaetodontriangulum, subspecies baronessa Ahl, Arch. Naturg., vol. 89, abth. 



A, Hefts, 1923, p. 175, pi. 2, fig. 11 (Ralum, New Guinea, New Pomerania, 



Bougainville, Amboina). 

 Gonochaetodon baronessa Fowler, Proc. Acad. Nat. Sci. Phila., 1927, p. 287 

 (Philippines). 

 Chaetodon larvatus (Ehrenberg) Cuvier, Hist. Nat. Poiss. vol. 7, 1831, p. 45. 



Red Sea. — Gunther, Cat. Fish. Brit. Mus., vol. 2, 1860, p. 31 (copied). — 



Playfair, Fishes of Zanzibar, 1S66, p. 36 (Aden). — Klunzinger, Verh. 



zool. bot. Ges. Wien, vol. 20, 1870 p. 108 (Red vSea).— Ahl, Arch. Naturg., 



vol. 89, abth. A, Heft 5, 1923, p. 177 (Massuah). 

 Chaetodon (Anisochaetodon) larvatus Klunzinger, Fische Roth. Mecr., 1884, 



p. 57. 

 Chaetodon karraf Cuvier, Hist. Nat. Poiss., vol. 7, 1831, p. 46. Massuah, 

 Chaetodon {Anisochaetodon) triang'duyn var. fcarrof Klunzinger, Fische Roth. 



Meer., 1884, p. 57. 

 Chaetodon larvatus var. karraf Ahl, Arch. Naturg., vol. 89, abth. A, Heft 5, 



1923, p. 177 (Massaua). 



Depth 1}4 to IK; head 2% to 3, width 2^ to 2i^. Snout 2J4 to 

 3 in head; eye 3 to 3%, 1 to 13^ in snout, greater than interorbital; 

 maxillary 3^ to ^ in snout, 3% to 43^ in head; interorbital 4 to 4}/^, 

 convex. Gill rakers 5 + 11, short points, }/^ of gill filaments, which 

 1% in eye. 



Scales 30 to 33 between gill opening and caudal base; tubes 17 to 

 19 in lateral line; 7 or 8 scales above lateral line, 18 or 19 below. 

 Scales with 8 to 12 basal radiating striae, with 1 to 6 auxiliaries 

 incomplete; apical denticles 82 to 142, transverse basal elements in 

 11 or 12 series; circuli fine. 



D. XI, 22, 1 to 24, 1, last spine 13^ to 13^ in head, fourth ray 1 to 

 1%; A. Ill, 20, 1 or 21, i, thhd spine 1^ to 1^, sixth ray 1^ to 13^; 

 least depth of caudal peduncle 2^ to 3; caudal 1% to 13^, hind edge 

 straight; pectoral 13^8 to 1)4; ventral 1 to 13^. 



Dark brown, paler or light brown over greater antero-median region. 

 Head, predorsal and breast with 3 parallel bands of blackish-brown 

 arched forward, median through eye, with 3 equally broad white bands 

 separating. Sides with about a dozen parallel wide-angled lines, 

 angle forming at median axis, posterior lines closer and becoming dif- 

 fused in dark color of tail. Whitish transverse band across front of 

 caudal peduncle, narrowing down across bases of last anal rays to 

 point. Margins of soft dorsal, anal and caudal whitish, only extreme 

 edge of soft dorsal dark or blackish; same fins all with submarginal 

 line, though on caudal leaving broad gray and white edge, so in 

 young dark transverse band median on fin. Caudal basally dark 

 brown with median dark gray band before dark transverse one. 

 Paired fins pale to whitish. 



Ked Sea, East Indies, Polynesia. A very deep species with dark 

 coloration and many transverse lines. The color-pattern is quite 

 constant. 



