134 BULLETIlSr 100, UNITED STATES NATIONAL MUSEUM 



CHAETODON FALCULA Bloch 



Chaetodon falcula Bloch, Naturg. Ausl. Fische, vol. 7, 1793, p. 102, pi. 325, 

 fig. 2. No locality (Collection John); vol. 9, 1795, p. 102, pi. 405, fig, 2 

 (no locality). — Schneider, Syst. Ichth. Bloch, 1801, p. 225 (Tranque- 

 bar). — CuviER, Hist. Nat. Poiss., vol. 7, 1831, p. 41 (copied). — GtJNTHER, 

 Cat. Fish. Brit. Mas., vol. 2, 1860, p. 17 (copied). — Kaup, Arch. Naturg., 

 vol. 26, abth. 1, 1860, p. 151 (Coromandel; Mozambique). — Playfair, 

 Fishesof Zanzibar, 1866, p. 33 (Zanzibar). — Capello, Jorn. Soc. Lisboa, 

 1871, p. 199 (Mozambique). — GtJNTHER, Journ. Mus. Godeffroy, vol. 2-3, 

 Heft 5-6, 1874, p. 39, pi. 27, fig. c (Paumotus, Society Islands, Hawaii, 

 Samoa, Kingsmills). — Day, Fishesof India, pt. 1, 1875, p. 104, pi. 26, fig. 5 

 (Nicobars); Fauna Brit. India, vol. 2, 1889, p. 4. — Jatzow and Lentz, Abh. 

 Senckenb. Naturf. Ges., vol. 21, Heft 1, 1897, p. 502 (Zanzibar).— Ever- 

 mann and Seale, Bull. Bur. Fish., vol., 26, 1906, p. 96 (Bacon). — Ahl, 

 Arch. Naturg., vol. 89, abth. A, Heft 5, 1923, p. 170 (type; Mozambique, 

 Mikindani).— Fowler and Ball, Bishop Mus. Bull., No. 26, 1925 (1926), 

 p. 18 (Wake Island). — Barnard, Ann. South Afrie. Mus., vol. 21, pt. 2, 

 Oct. 1927, p. 612 (Mozambique). 



Pomacentrus falcula Lac^p^de, Hist. Nat. Poiss., vol. 4, 1802, pp. 506, 511, 

 513. 



Tetragonoptrus {Oxy chaetodon) falcula Bleeker, Atlas Ichth. Ind. Ncerland., 

 vol. 9, 1877, p. 52, pi. (11) 373, fig. 1 (Batu, Ternate, Amboina). 



Chaetodon ulietensis Cuvier, Hist. Nat. Poiss., vol.7, 1831, p. 39. Ulietea. — 

 GtJNTHER, Cat. Fish. Brit. Mus., vol. 2, 1860, p. 18 (copied). — Kaup, Arch. 

 Naturg., vol. 26, abth. 1, 1860, p. 152 (Ulietea).— Snyder, Proc. U. S 

 Nat. Mus., vol. 42, 1912, p. 510 (Okinawa). — Ahl, Arch. Naturg., vol. 

 89, abth. A, Heft 5, 1923, p. 171 (Jaluit, Samoa).— Herre and Montal- 

 ban, Philippine Journ. Sci., vol. 34, No. 1, Sep. 1927, p. 46 (Olongapo). 



Chaetodon dizoster Valenciennes, Hist. Nat. Poiss., vol. 7, 1831, p. 527. 

 Mauritius; Regne Animal Cuvier, Poiss. 111., 1839, pi. 39, fig. 2. — GIjnther, 

 Cat. Fish. Brit. Mus., vol. 2, 1S60, p. 17 (copied). 



Chaetodori aurora De Vis, Proc. Linn. Soc. New South Wales, vol. 9,^1885, 

 p. 453. Queensland Coast. 



Chaetodon ulietensis var. confluens Ahl, Arch. Naturg., vol. 89, abth. A, Heft 

 5, p. 172. South Seas. 



Depth 13/^ to 1%; head 2% to 2%, width 2% to 23i. Snout 2)4 

 to 2y2 in head; eye 3 to 43^, li^ to 1% in snout, little greater than 

 interorbital in young to lr& with age; maxillary ^ to % m snout, 

 3}^ to 33-^ in head; interorbital 3 to 4, broadly convex. Gill rakers 

 3 + 12, short points, ^ of gill filaments, which 1% in eye. 



Scales 28 to 30 between gill opening and caudal base; tubes 24 or 

 25 in lateral line; 6 scales above lateral line, 13 to 15 below. Scales 

 with 8 to 13 basal radiating striae; apical denticles 88 to 160, with 10 

 to 14 series of transverse basal elements; circuli fine. 



D. XII, 24, I or 25, i, last spine 1% to 23^ in head, sixteenth soft 

 ray 1^^ to 2; A. Ill, 19, i to 21, i, third spine 1% to 2, tenth ray \% 

 to 2; least depth of caudal peduncle 3i^ to Z}/i; caudal convex 

 behind, 1% to 2; pectoral IV^ to 1%; ventral 1 to I3/3. 



Dull brown generally, paler below. Broad black band traverses 

 eye vertically, narrowed above and uniting with its fellow at predorsal, 



