REVIEW OF THE PARROTFISHES 



37 



166. Dorsal and caudal fins yellow; no dark spot on dorsal fin; 

 no white margin distally on caudal fin; in alcohol, 

 2 or 3 light streaks may occur on belly, one streak on 

 each scale row; distal margin of anal fin may have a 

 narrow blue band basally, the rest of fin is light red- 

 dish brown; no radiating streaks around eye; plate 

 10,A. (Central and West Pacific, Indian Ocean.) 



dubius Bennett 

 156. Coloration not plain brownish; caudal fin with its distal 

 margin marked by a dusky band or pale band; edges of 

 both lips narrowly pale; caudal fin with indistinct 

 lengthwise dusky streaks; distal margin of anal fin with 

 a dusky band or green band equal in width to diameter 

 of pupil; figures 9 and 23. (Central and West Pacific, 

 Indian Ocean.) . . . forsteri Cuvier and Valenciennes 



Figure 9. — Scarus forsteri. (Sketches by author.) 



136. Pectoral rays usually ii,13, rarely ii,12 or ii,14 (see table 3). 



17a. Edges of dark brown dorsal, anal, caudal, and pelvics fins 

 sharply margined with white in alcohol, blue when alive; 

 body plain brown; forehead of adult above eyes with 

 rounded swelling; caudal fin truncate or rounded; plate 

 11, A. (Western Indian Ocean.) 



cyanescens Cuvier and Valenciennes 

 176. Color not as above. 



18a. Background coloration reddish or brownish red when alive, 

 brown in alcohol, with 4 or 5 darker bars on sides, 

 separated by paler interspaces; when alive the darker 

 bars, usually purplish brown, may be somewhat obscure; 

 all fins brownish red; plate 11,b. (West Pacific.) 



rlioduropterus (Bleeker) 

 186. No light and dark vertical bars on body. 



19a. Pale streak extends from the mouth to below eye but not 

 touching eye, thence bends ventrally and ends on 

 opercle opposite upper base of pectoral; edge of upper 

 lip pale, then a dusky (green when alive) streak; anal 

 fin with an oblique bar (red or greenish red when 

 alive) across its middle portion, remainder of anal fin 

 pale (probably yellowish when alive); figure 10. 

 (West Pacific.) . troscheli Bleeker 



