REVIEW OF THE PARROTFISHES 101 



I have studied specimens in lots from the following localities: 

 Phoenix Islands, 4 lots; Philippines, 5; Bonin Island, 1; and Persian 

 Gulf, 2. 



KEY TO THE SPECIES OF SCARUS OF THE ATLANTIC 



la. Four rows of scales on the cheek, with from 2 to 4 in the ventral row; pectoral 

 rays ii,12, rarely ii,13; canines present or absent in adults; figure 26 and 



plate 20, c. (West Atlantic.) vetula Bloch and Schneider 



1&. Three rows of scales on the cheek, the ventral row may be represented by 

 1 scale (rarely missing on one side) or as many as 5 scales. 

 2a. Pectoral rays usually ii,13 or ii,14; canines usually absent in adults. 



3a. Pectoral rays usually ii,14; third, or ventral, row of scales on cheek 

 with 1 scale occasionally 2 scales; in adults margins of lips pale 

 with brownish submarginally; coloration plain dusky to light 

 brownish, with narrow margins of dorsal and anal fins dusky (green 

 when alive) or same color as rest of fin (in alcohol); figure 27 and 

 plate 20, D. (West and East Atlantic.) . . . guacamaia Cuvier 

 3&. Pectoral rays ii,13 or ii,14; (see table 5) usually 1 scale, occasionally 2, 

 in third, or ventral, row on cheek; in adults narrow edges of both 

 lips brown, thence submarginally pale (blue or blue-green when 

 alive), then on lower jaw a brown crossbar; scales on cheeks blackish 

 or brown, naked areas green; distal edges of dorsal and anal fins 

 distinctly pale in alcohol (bright blue or green when alive); outer 

 edges of caudal and pelvic fins blue; general background color of 

 body and fins brownish; plate 21, b. (West Atlantic.) 



coelestinus Cuvier and Valenciennes 

 3c. Pectoral rays ii,13; usually 2 scales in third, or ventral, row on cheek; 

 young as well as adults usually with a hump on the snout; coloration 

 usually uniform robin's-egg blue when alive, occasionally incon- 

 spicuous green stripes on snout, the latter blue-green; distal edges 

 of dorsal and anal fins blue-green, rest of fin light pink; outer edges 

 of paired fins and caudal fin blue-green; greatest depth about 2.7 

 to 3.1, plates 21, a, 22, a. (West Atlantic). . coeruleus (Bloch) 

 26. Pectoral rays ii,12, rarely ii,13 on one side. 



4a. Coloration usually consisting of a pattern of light and dark stripes or 

 bands on sides and upper sides; 3 sharp or narrow white or dark 

 streaks, one each on the middle of the 3 lower rows of scales on 

 abdomen; anal fin plain in color, without a median streak; imma- 

 ture and females; plate 27,c. (West Atlantic, Bermuda.) 



croicensis Bloch 

 46. Coloration not as above. 



5a. Coloration of anal fin consists of two parallel brown lines, separated 

 by a pale interspace, across its middle third, with a series of 

 brown (blue when alive) spots in pale interspace; opercular flap 

 usually brownish; a broad band behind head pale; adult males 

 (formerly known under the name pundulatus Cuvier and Valen- 

 ciennes) ; plate 21, c. (West Atlantic.) .... croicensis Bloch 

 56. Coloration of anal fin consists of a pale basal half and a dark distal 

 half; a dark streak from eye across operculum toward pectoral 

 base, the latter dark; two pale streaks across snout; plate 21, d. 

 (East Atlantic.) hoefleri (Steindachner) 



