CH^TODONID-E. SCARING. 



227 



Chlorurus Sw. (Jig. 6l.) Head obtuse; forehead gib- 

 bous; caudal fin lunate, with the two extremities at- 

 tenuated; lateral line interrupted. 



C. gibbus. Riipp. Atl. pi. 20. fig. 2. 



Sparisoma * Sw. General form of Petronason, but the 

 scales are hexagonal, and (according to Bloch) the 

 jaws are furnished with sharp incisive teeth and 

 obtuse canines. 



S. Abildgardii. Bloch, pi. 259. 



OsTORYNCHUs Lttcep. Mouth and jaws considerably 

 elongated ; the under jaw longest ; teeth as in Sca- 

 rus; eyes large ; head naked; dorsal fins two (?), 

 which, with the anal, are very short ; caudal large, 

 lunated ; lateral line indistinct : analogous to Gom- 

 phosis, &c. 

 O. rostratus. Lacep. iv. 24. Shaw, G. Zool. Iv. 2. 401. 



Amphiscarus t Sw. Jaws as in Scarus, strong, bony, 

 and entire, or without any tooth-like indentures on 

 the edges ; lips thick ; in all other respects of 

 outward structure resembling Siganus ; dorsal and 

 anal fins with numerous spinous rays, but no visible 

 incumbent spine in front; ventral fin with two spinous, 

 and three soft rays ; scales small ; caudal forked ; 

 lateral hne indistinct ? 



A. fuscus. Griff. Cuv. pi. 35. 



* Cuvier terms this singular fish a Scarus, and Bloch, a Sparus. The 

 genus Odax of Cuvier is too slightly defined for me to adopt, and no figure 

 of the fish exists. 



+ I have ventured to characterise this fish as a distinct type among the 

 Scarince on the authority of the above plate, where the jaws are more dis- 

 tinctly represented in a separate figure ; a more extraordinary instance of 

 symbolical representation I hardly ever met with. 



Q 2 



