REVIEW OF THE PARROTFISHES 



111 



rounded; size probably not exceeding 160 mm. in standard length; 

 plate 22,c, d. (East and West Atlantic.) 



radians (Cuvier and Valenciennes) 



16. A single prominent canine tooth may occur near midside of upper dental 

 plate in combination with a broad white bar in basal third of caudal fin; 

 distance from suture between upper dental plates to canine tooth is 

 contained from 1.9 to 2.3 times in distance between centers of posterior 

 nasal pores; at standard length of 80 mm. and longer cirri develop on 

 nasal tentacle; no cirri on membranes of spiny dorsal fin; depth of body 

 about 2.4 to 2.5 in standard length; no dark bar on pelvic fins (young). 



abilgaardi (Bloch) 



Ic. If a canine tooth is present on side of upper dental plate at a standard length 

 of 160 mm. or shorter, it is notably behind middle of side of dental 



Figure 28. — Sparisoma viridis. (Sketch by author.) 



plate, and not on a ridge; usually canines do not develop until larger 

 sizes are reached, except in abilgaardi. 

 2a. Opercular flap with a round white spot (yellow when alive); posterior 

 edge of opercle white (red when alive) ; caudal fin deeply forked, -nith 

 a lunate white (red when alive) bar submarginally and distal edge 

 green; on base of caudal fin and on peduncle 1 to 3 large pale spots 

 (orange or yellow when alive) ; a pale streak (red when alive) bounded 

 by green from corner of mouth across cheek; no dark pectoral spot; 

 (above description appears to be that of males; females probably lack 

 white opercular spot, but caudal fin is white-margined distally, then a 

 dark submarginal crossbar, with center of fin white); figure 28. 



(West Atlantic.) viridis (Bonnaterre) 



26. Color not as above. 



3o. Small brown spots somewhat ocellate, occur on third or fourth scales 

 behind head in row of scales just below lateral line; tips of outer 

 caudal fin rays blackish; anterior nostril with a short dermal flap 

 bearing multifid cirri distally; caudal fin truncate to deeply forked, 

 distally in latter a lunate white area; dorsal base of pectoral fin 

 dusky; a white streak extends from corner of mouth past lower 



Figure 29.— Sparisoma aureofreJiatum, male. (Sketch by author.) 



