496 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Depth 2% to 2yi; head 2% to 2%, width 2}^ to 2\i. Snout 

 1V6 to I3>g; eye 6>g to 8^, 3^ to 4 3^ in snout, 2 to 2 5^ in inter- 

 orbital; mouth cleft 3^ to 43^ in head; lips half cover teeth, com- 

 pletely cover teeth in young, coriaceous; no canines; in terorbital 3 r& to 

 Z}4> in head, convexly elevated, upper profile with slight prominence, 

 above and close before nostrils. Gill rakers 9 4-10, firm, short, 

 on lower branch broadly and transversely triangular. 



Scales in lateral line 17 + 6 to 8 + 2; 2 scales above lateral line, 

 5 to 7 below, 6 predorsal; cheek with 2 rows of scales, but suborbital 

 rim naked and 1 or 2 scales on preopercle flange. Scales with 29 

 to 33 basal radiating striae, edge trilobate; 17 to 20 apical radiating 

 striae; circuli very fine. 



D. IX, 10, I, first spine 2 1^ to 3 1^ in head, first ray 2^ to 2 3^; 

 A. Ill, 9, I, third spine 2% to 3, first ray 2 3/8^-0 25^5; caudal 13^ to 

 13^> slightly double concave, medianly largely convex as expanded; 

 least depth of caudal peduncle 2% to 2%; pectoral 1% to \}/2', 

 ventral 1% to IJ^. 



Vandyke brown generally, vertical fins and ventrals dull neutral 

 dusky. Pectoral dull brown. Teeth whitish. 



East Indies, Melanesia, Micronesia, Polynesia. Bleeker's figure 

 agrees with our examples, though as he had only three specimens 

 between 685 and 1,010 mm. the more developed caudal points are 

 doubtless the result of age. Our larger examples at least show the 

 hind nostril greatly larger than the front one, slitlike, and about two- 

 thirds diameter of pupil. Our Cebu example greatly resembles the 

 two examples from Zamboanga of Callyodon margaritus, reported by 

 Fowler and Bean. The pale or whitish spots are about size of pupil, 

 or some even a little larger. 



8630. Biri Channel. June 1, 1909. Length, 350 mm. 



8405. Cebu market. Ivlarch 19, 1909. Length, 242 mm. 



7534. Endeavor Strait. December 23, 1908. Length, 331 mm. 



9280 and 9281. Murcielagos Bay. August 9, 1909. Length, 466 and 467 mm. 



9338. Same locality. August 21, 1909. Length, 422 mm. 



7674. Ulugan Bay, Palawan. December 28, 1908. Length, 434 mm. 



A. 989. Binang Unang Island, Dutch East Indies. November 17, 1909. Length, 



510 mm. 



CALLYODON BICOLOR (Ruppell) 



Scarus bicolor Ruppell, Atlas Reise Nordl. Afr., Fische, 1828, p. 82, pi. 21, 

 fig. 3. Djedda. 



Pseudoscarus bicolor Bleeker, Atlas Ichth. Ind. N^erl., vol. 1, 1862, p. 33, 

 pi. 14 (Celebes).— GtJNTHER, Cat. Fish. Brit. Mus., vol. 4, 1862, p. 219 

 (Red Sea). — Guichenot, Mem. Soc. Sci. Nat. Cherbourg, vol. 11, 1865, 

 p. 53 (Red Sea).— Meyer, An. Soc. Hist. Nat. Madrid, vol. 14, 1885, 

 p. 38 (Macassar). — GtJNTHER, Journ. Mus. Godeffroy, vol. 8 (16), 1909, 

 p. 305 (Red Sea, Celebes, Ponape). — Weber, Siboga Exp., vol. 57, Fische, 

 1913, p. 384 (Makassar). 



