102 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Chaetodon melanotus (Reinwardt) Cuvier, Hist. Nat. Poiss., vol. 7, 1831, 

 p. 71 (Tranquebar).— Kaup, Arch. Naturg., vol. 26, abth. 1, 1860, p. 150 

 (India, Africa). — Klunzinger, Verh. zool. bot. Ges. Wien, vol. 20, 1870, p. 

 56 (Koseir). — Gunther, Journ. Mus. GodefFroy, vol. 2-3, Heft 6-6, 1874, p. 

 44 (Samoa, Fiji).— Day, Fishes of India, pt. 1, 1875, p. 108, pi. 28, fig. 1.— 

 Klunzinger, Fische Roth. Meer, 1884, p. 777. — Day, Fauna Brit. India, 

 vol. 2, 1889, p. 9. — Weber, Siboga Exp., vol. 57, Fische 1913, p. 307 (Elat 

 and Feer). — McCulloch, Rec. Austral. Mus., vol. 14, No. 1, 1923, p. 3 

 (Murray Island, Queensland). — Ahl, Arch. Naturg,, vol. 89, abth. A, 

 Heft 5, 1923, p. 128 (Indian Ocean, Red Sea, Mauritius, Mozambique, 

 Samoa, Mikindani, Ralura, New Guinea, Bougainville, Palau, Carolines). — 

 Herre and Montalban, Philippine Journ. Sci., vol. 34, No. 1, September, 

 1927, p. 44, pi. 11, fig. 2 (Mariveles, Batangas, Calapan, Tagapula, 

 Gigantangan, New Washington, Bantayan, Cebu, Agutaya, Quiminatin, 

 Zamboanga, Sibutu). — Barnard, Ann. South Afric. Mus., vol. 21, pt. 

 2, October, 1927, p. 612 (Mozambique). 



Chaedoton melanotus Steindachner, Abh. Senckenb. Naturf. Ges., vol. 25, 

 1900, p. 419 (Batjan). 



Tetragonoptrus (C haetodontops) melanotus Bleeker, Atlas Ichth. Ind. N^er- 

 land., vol. 9, 1877, p. 43, pi. (14) 376, fig. 1 (Batu, Celebes, Flores, Timor, 

 Temate, Ceram, Amboina, Goram, Banda). 



Chaetodon dorsalis (Reinwardt) Ruppell, Atlas Reise Nordl. Afrika, Fische, 

 1828, p. 41, pi. 9, fig. 2. Mohila, Red Sea. — Cuvier, Hist. Nat. Poiss., 

 vol. 7, 1831, p. 70 (Moluccas, Mohila). — Gunther, Cat. Fish. Brit. Mus., 

 vol. 2, 1860, p. 28 (Amboina, Fiji). — Playfair, Fishes of Zanzibar, 1866, 

 p. 34 (Zanzibar). 



Chaetodon marginatus (Ehrenberg) Cuvier, Hist. Nat. Poiss., vol. 7, 1831, 

 p. 57. Massauah, Red Sea. — Ruppell, Neue Wirbelthiere, Fische, 1835, 

 p. 28. 



Chaetodon ahhorlani Cuvier, Hist. Nat. Poiss., vol. 7, 1831, p. 58. Mauritius. 



Depth IK to 13^; head 2% to 3M, width 2 to 23^. Snout 2?^ 

 to 33^8 measured from snout tip; eye 2% to 3}/^, greater than snout 

 to 13^8 with age, gi'eater than interorbital to IV^ with age; maxillary- 

 reaches half way to % in snout, 4 to 5 in head; interorbital 3 to 3%, 

 broadly convex. Gill rakers 3 + 9, short weak points, y^ of gill 

 filaments, which 1^ in eye. 



Scales 22 to 28 between gill opening and caudal base; tubes in 

 lateral line 25 or 26; 7 or 8 scales above lateral line, 13 to 16 below. 

 Scales with 10 basal radiating striae; apical denticles 55 to 116, with 

 5 to 23 transverse series of basal elements; circuli very fine. 



D. XII, 19, I or 20, i, last spine 1^ to 1% in total head length, 

 ninth ray \% to l}^; A. Ill, 17, i or 18, i; third spine \% to 1^, 

 eighth ray \% to 1%; least depth of caudal peduncle 3 to 4; caudal 

 truncate to slightly convex behind, \yi to \%; pectoral IJ/g to \%; 

 ventral 1 to \}/i. 



Back brown, lower surface pale to whitish. Each row of body scales 

 with dark brown stripe medially, usually made up of spots, large and 

 conspicuous or blackish at dorsal and anal bases, smaller on breast 

 and abdomen. Two pale blotches on back, usually along summit of 



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