FISHES OF THE PHH.IPPINE AND ADJACENT SEAS 149 



1167,4912. Tataan Bay, Simaluc Island. Length 114 to 143 mm. Slaty black 

 below merging into greenish umber above. Pale bar, including first 3 dorsal 

 spines, passes across opercle, covers breast and lower head e.xcept black chin. 

 Preocular edged with very pale slate, forehead and snout otherwise black. 

 Oblique white bar begins on tip of first dorsal spine, crosses base of soft dor- 

 sal to include caudal peduncle; vertical anal edge beyond narrowly bordered 

 white; soft dorsal beyond stripe yellowish olive green, membranes hyaline 

 terminally, very narrowly edged with greenish black. Caudal similar to soft 

 dorsal only paler. Anal and ventral slaty black. Pectoral dusky hyaline 

 basally. Iris very dark. 



1002, 1003. Tataan. February 20, 1908. Length 118 to 125 mm. 



4965. Tataan, on reef. February 21, 1908. Length 140 mm. 



5830. Tataibada Point. May 15, 1908. Length 165 mm. 



6491. Tilig, Lubang Island. July 15. 1908. Length 151 mm. 



6641, 6666. Varadero Bay, Mindoro. July 23, 1908. Length 176 to 182 mm. 



A862. Limbe Strait, Celebes. November 10, 1909. Length 153 mm. 



3908. Una Una Road, Binang Unang, Celebes. November 17, 1909. Length 

 87 mm. 



7976. Talisse Island. November 9, 1909. Length 133 mm. 



21501. Gane Road, Gillolo Island. December 7, 1909. Length 50 mm. 



4715. Tidore Island, south of Ternate. November 25, 1909. Length 75 mm. 



47778 U.S.N. M. New Guinea. Australian Museum. Length 148 to 150 mm. 

 Two examples. 



52515 U.S.N. M. Apia, Samoa. Bureau of Fisheries. Length 103 mm. 



55939 U.S.N.M. Bacon, Philippines. Bureau of Fisheries. Length 145 mm. 



[3336]. 



HENIOCHUS MONOCEROS Cuvier 



Heniochus monoceros Cuvier, Hist. Nat. Poiss., vol. 7, 1831, p. 100. 



Mauritius. — Gunther, Cat. Fish. Brit. Mus., vol. 2, 1860, p. 41 (type); 



Journ. Mus. Godeffroy, vol. 2-3, Heft 5-6, 1874, p. 49, pi. 38 (Samoa 



and Tahiti).— Ahl, Arch. Naturg., vol. 89, abth. A, Heft 5, 1923, p. 29 



(Samoa and Mauritius). 

 Taurichthys monoceros Bleeker, Atlas Ichth. Ind. Neerland., vol. 9, 1877, p, 



28, pi. (3) 365, fig. 3 (Java). 

 Loa excelsa Jordan, Proc. U. S. Nat. Mus., vol. 59, 1921, p. 652, fig. 6. Hawaii 



(young). 



Depth l}4 to 2%; head 2% to 33/g, width 2^ to 2^. Snout 2% 

 to 3% in head; eye Bj^'g to 3%, 1^ to 13^ in snout, little greater than 

 iuterorbital; maxillary % to % in snout, 4 to 4^^ in head; interorbital 

 3}i to 3J4, slightly convex; with age small horny spine developed 

 over upper front eye edge, strong, not longer than pupil; occiput with 

 horny tubercle like spine, though much less developed than in Heni- 

 ochus varius. Gill rakers 5 + 13, short points, about yo oi gill filaments, 

 which 13^ in eye. 



Tubes 55 to 58 in lateral line to caudal base; 11 or 12 scales above 

 lateral line, 27 or- 28 below. Scales with 10 to 12 basal radiating 

 striae; apical denticles 75 to 90, with 10 to 33 transverse series of 

 basal elements; circuli fine. 



D. XII, 23, I to 26, I, fourth spine elongated, 1% to 2 in combined 

 head and body, fourth ray l}i to 1?5 in head; A. Ill, 18, i or 19, i, 

 91469—29 11 



