84 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



aa. Teeth whitish or rosy. 



b. Angle of mouth without caniue. 



c. Third row of scales of the cheek of one or two scales only; scales of the upper 



row much larger than those of the second row ; caudal subtruucate, its 



outer rays more or less produced ; adult with a fleshy hump above the 



snout ; color bright blue, the young more or less shaded with reddish 



brown ; fins mostly blue. Size large Cceruleus, 2 



cc. Third row of scales of the cheek of three or four scales ; scales of the upper row 

 little larger than those of the second row : caudal slightly rounded, its 

 outer rays not produced. Reddish, with three longitudiual blackish 

 stripes, the second through eye to base of caudal ; usually three whitish 



streaks on lower part of sides ; fins chiefly orange Croicexsi.s, 3 



li. Upper jaw with a posterior canine (rarely duplicated) ; cheeks with two and a half 

 rows of scales ; caudal subtruucate, its outer rays scarcely produced; 

 head with two bluish green stripes, the interspaces reddish or yellow ; 

 general color bluish green, mixed with orange ; dorsal and anal each 

 with two green bands and one orange one. 

 d. Outer rays of caudal chiefly orange ; yellow stripe above pectoral, below the 

 level of the green stripes on head, which are nearly horizontal ; orange 



stripe on dorsal and anal fins without blue spots Virgixalis, 4 



dd. Outer rays of caudal deep greenish blue; yellow stripe above pectoral 

 (if present), above the level of green stripes on head, which are f.ome- 

 what oblique; orange stripe on dorsal and anal spotted or shaded with 



blue PUNCTULATUS, 5 



1. Scarus guacamaia. 



Guacamuia Parra^ Descr. Dif. Piezas Hist. Nat., 1787, p. 54, pi. 26 (Cuba). 

 Scarus guacamaia Cuvier, Regne Animal, ed. ii, 1829, 26.5. (No descr. ; based 



on Parra. Not Scarus guacamaia Cuv. & Val. =^ Scarus pleianus Poey.); 



Jordan &c Gilbert, Syn. Fish. N. A., 1883, 938. 

 Pseudoscarus guacamaia Giinther, iv, 233 (Jamaica, Puerto Cabello, Bahia) ; 



Poey, Synopsis Pise. Cubens., 1868, 348, 463; Poey, Enumeratio Pise. 



Cubens., 1875, 117. 

 Hemistoma guacamaia Jordan & Gilbert, Syn. Fish., N. A., 1883, 607 (Key 



West). 



Head, 3 (3| in length to base of caudal) ; depth, 2f (3f ) ; length 

 of example described (Key West), 7i inches. 



Body moderately elongate. 



Jaws deep bluish-green, the color not fading in spirits; no canine 

 teeth ; upper lip covering more than half of surface of upper jaw. 



Snout not very obtuse, 2| in head; eye small, C in head; cheeks, with 

 two rows of scales of five or six in each row, those of the upper row 

 nearly twice as broad as those of the lower ; a single scale below the 

 lower row ; six or seven scales on median line before dorsal. 



Caudal rounded when spread open, its angles slightly produced, its 

 outer rays (in specimens 8 inches long), i in head. In adults the outer 

 rays are longer in iiroportion, and in very old examples, none of which 

 were seen by us, they are said to be greatly i)roduced. 



Color in life, of specimens of moderate size, olive green, each scale 

 edged with clear brown; its middle, especially above, bright verdigris 

 green. Sides of head brownish-gray ; belly white, tinged with browi) ; 



