430 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Callyodon rivulatus Seale and Bean, Proc. U. S. Nat. Mus., vol. 33, 1907, 



p. 246 (Zamboanga). 

 Scarus russelii Valenciennes, Hist. Nat. Poiss., vol. 14, 1839, p. 234. (On- 



RussELL, Fishes of Cormandel, vol. 2, 1803, p. 14, pi. 119. Vizagapatam.) 

 Scarus rivulatoides Bleeker, Verb. Batav. Genootsch. (Labr.), vol. 22,. 



1849, p. 55. Batavia. 

 Scarus micrognaihos Bleeker, Atlas Ichth. Ind. N6erl., vol. 1, 1862, p. 56. 



Batavia. 



Depth 2% to 2%; head 2% to 3, width 23/g to 2^. Snout 23^ to 

 2M; eye 73^ to 9, 3 to 4 in snout, 23/^ to 3 in interorbital ; mouth 

 deft Z% to 43^ in head; lips largely or quite cover teeth; canines 

 usually present, 1 to 3 each side above, same below; interorbital 

 convex, 2% to 3 in head. Gill rakers 16 + 12, short, weak, flexible. 



Scales in lateral line 19 or 20, 5 or 6 + 2; 2 scales above lateral line^ 

 6 below, 6 predorsal; cheek with 3 rows of scales, of which lowest 

 row of 2 scales on preopercle flange. Scales with 40 to 48 basal 

 radiating striae, apical 46 to 48; circuli fine. 



D. IX, 10, I, ninth spine 2% to 3 in head, first ray 2^ to 33^^ 

 A. Ill, 9, I, third spine 3^ to Z%, first ray 2% to 33/^; caudal \% 

 to 13^, little concave behind; least depth of caudal peduncle 23^ 

 to 2%; pectoral 13^ to 13^; ventral 2 to 23^. 



Body dull brown generally. Eye and mouth with a number of 

 radiating variable greenish yellow lines, often more or less vermicu- 

 lating and extending across chin and snout as well. Dorsals grayish 

 brown, with marginal band of light olive and basal dark longitudinal 

 band. Anals gray brown, margin rather broadly pale. Pectoral dull 

 brown, with submarginal darker brown band above. Fins other- 

 wise dull brown. 



India, East Indies, Phihppines, and Polynesia. We have followed 

 Day in placing Scarus russelii Valenciennes, S. rivulatoides Bleeker 

 and S. microanathos Bleeker as synonyms. 



Pseudoscarus Jlavolineaius Alleyne and Macleay may be the present 

 species." 



6494. Balikias Bay. July 17, 1903. Length, 325 mm. (Canines, upper, 

 2 — 2; lower, 2 — 2.) Teeth white. General color, green. Lower opercle with 

 orange shades; snout green, with geranium spots and lines; chin bluish, with 

 broad heliotrope bands. Vertical fins edged blue, body of fin purplish orange; 

 center of membranes largely green in dorsal; body of anal slaty purplish; 

 caudal with dusky orange stripe. 



8624. Biri Channel. June 1, 1909. Length, 226 mm. 



8649. Same locality. June 22, 1909. Length, 243 mm. 



7449. Bolalo Bay, Palawan Island. December 21, 1908. Teeth white; general 

 color viridian green; nose and chin with orange or scarlet vermiculation; 

 front and margin of dorsal and anal blue; body of dorsal orange, with round 

 green blotches in center of membranes, fusing in front; caudal orange and 

 blue; anal and dorsal with green at bases of rays and on membranes poste- 



M Proc. Linn. Soc. New South Wales, vol. 1, 1877, p. 346, pi. 16, fig. 3. Cape Orenville. 



