REVIEW OF THE PARROTFISHES 43 



Figure IS. — Scarus chlorodon, after Bikini specimens: a, specimen 210 mm. in standard 

 length; b, a specimen 240 mm. in standard length. (Sketches by author.) 



37a. Back not marked with dark bars or saddles. 

 38a. Lower part of head behind mouth with charac- 

 teristically U-shaped or double U-shaped 

 green blotches sometimes joined so as to 

 cover most of lower part of head, for shapes 

 of blotches see figure 15 ; first soft dorsal ray- 

 on adults usually elongated; plate 17,B,c. 

 (Central and West Pacific, Indian Ocean.) 

 chlorodon Jenyns 

 386. A broad green band across anterior lower part 

 of head, without any U-shaped green 

 blotches behind this green band; body gen- 

 erally dusky or brownish with an indistinct 

 pale green bar, 2 or 3 scales wide, dorsally 

 on middle of body below last two dorsal 

 spines and first soft ray; for other character- 

 istic color marks see figure 24. (Red Sea.) 

 marshalli, new species 

 38c. General color blue, or grayish dorsally in al- 

 cohol, yellowish ventrally ; margins of scales 

 on back and sides yellowish, centers green; 

 a blue bar across forehead between eyes, 

 becoming indistinct posteriorly ; blue band 

 from angle of mouth to eye and thence 

 around tip of snout; third blue band from 

 angle of mouth downward and thence for- 

 ward across chin; dorsal and anal brick red, 

 with blue or green streak basally and a 

 broad green margin; caudal pinkish ^^^th 

 upper and lower rays blue; pel vies pinkish; 

 pectorals yellowish, upper rays blue or 

 green; no ray of dorsal fin elongated; great- 

 est depth 2.3 to 2.5; figure 16. (East 

 Pacific.) azureus Hildebrand 



396816—58 



