104 BULLETIN 214, UNITED STATES NATIONAL MUSEUM 



about 2 scales wide; these are believed to be mature females; larger 

 adults have streaks on the head as shown in figure 26. 



At lengths of 40 to 100 mm. in standard length the color pattern 

 is plain brownish and the dorsal and anal fins are narrowly edged 

 with a dark line, whereas the caudal fin distally is edged with white. 



A specimen, 240 mm. in standard length, immature male from 

 Bermuda, collected by Dr. Winn, was grayish with green fins when 

 alive. The distal half of anal was green, basal half pink; middle rays 

 of caudal fin green, outer rays dorsally and ventrally pink; pectoral 

 and pelvics pink ; lower lip with very narrow pink edge, submarginally 

 a green streak that extends to below eye then pink, followed by a 

 broad green band across ventral part of head. The 355-mm. specimen 

 is a mature male, bright green, with color pattern as shown in figure 26. 



I have examined numerous specimens in lots in the national collec- 

 tion from the following localities: Florida, 2 lots; Cuba, 1; Bermuda, 

 3; Cozumel, 1; Panama, 1; St. Lucia, 1; Barbados, 1; St. Thomas, 1; 

 and West Indies, 1; also 1 specimen from Bermuda, loaned by the 

 Chicago Natural History Museum; 4 specimens from Bermuda, col- 

 lected by Dr. Winn ; and 5 lots from the Bahama Islands, loaned by 

 Dr. Bohlke. 



Scarus guacamaia Cuvier 



Figure 27; Plate 20,d 



Scarus guacamaia Cuvier, Rfegne animal . . . , ed. 2, vol. 2, p. 265, 1829 (based 



on Parra, 1787, pi. 26; no description). — Cuvier and Valenciennes, Histoire 



naturelle des poissons, vol. 14, p. 178, 1839 (St. Thonaas). 

 Scarus turchesius Cuvier and Valenciennes, Histoire naturelle des poissons, vol. 14, 



p. 181, 1839 (type locality: Puerto Rico). 

 Scarus pleianus Poey, Memorias . . . , vol. 2, p. 393, 1861 (based on S. guacamaia 



Cuvier and Valenciennes). 



This species is characterized by having ii,14 pectoral fin rays; 6 

 median predorsal scales, 3 rows of scales on the cheek, usually with 

 1 scale (sometimes 2) in the ventral row; and green teeth in the adult, 

 canine teeth seldom present at rear of jaws. S. guacamaia is close to 

 S. coelestinus but differs in color pattern. Further verification is 

 needed because these differences might represent sexual dichromatism. 

 I do not have specimens snfiiciently well preserved to determine sex. 



In alcohol, the narrow distal margins of the dorsal and anal fins 

 are dusky (green when alive) or the same color as rest of fin; and the 

 margins of lips are pale (red when alive); submarginally a dusky 

 (green when alive) streak crosses snout to lower front of eye and 

 another such streak extends across middle of chin towards corner 

 of mouth, sometimes interrupted there, thence to lower edge of eye; 

 teeth green. The teeth of this species begin to turn green at about 

 60 mm. in standard length. 



