1886.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 47 



there is considerable difference in the dentition of the two sides of the 

 jaw, it is probable that the number, size, and direction of the canine 

 teeth is variable. 



The description of CaUiodon retract m, I'oey is very scanty and con- 

 tains nothing whatever which is tangible. It probably rcfci's to the 

 same species. 



The CaUiodon auropunctatus of Cuv. & Val. seems to bo a different 

 species, more nearly allied to C. hcryUmus, from which it wonld api»car 

 to be distinguished by the presence of a posterior canine. 



The specimen from San Domingo mentioned by Cnvier & Valenci- 

 ennes as destitute of canines, probably belongs to C. berydimis, or per- 

 haps to C roseus, Cope. 



151. Sparisoma xystrodon Jordaa & Swain. 



152. Sparisoma abildgaardi Blocli. Vicja. 



(Scarus ahildgaardi and S. oxyhrachius Poey.) 



153. Sparisoma aurofrenatum Cuv. & Val. 



(Scarus mhtiofreitatiis Poey.) 



154. Sparisoma lorito Jordan & Swain. 



155. Sparisoma chrysoptemm Bloch & Schneider. 



(ScaniH lateralis Poey.) 



156. Sparisoma frondosum Cuv. & Val. 



(Scarus hrachialis Poej\) 



157. Sparisoma flavescens Bloch & Schneider. Fieja. 



(Scarus sijualidns Poej'.) 



158. Scarus taeniopterus Desniarest. 



(Scarus j)unc1ida1us C. & V. Pseudoscarus diadema Poey.) 



The descriptions of Desmarest's type of Scams tcmioptcrns, as given 

 by Valenciennes, and by Guichenot, agree fairly with Scarus pnnctu- 

 latns except in regard to the markings of the head and in the colora- 

 tion of the fins. 



The markings on the head grow faint in specimens long i)reserved in 

 alcohol, and they are perhaps less distinct in adult exam])les than in 

 the young. The changes due to the alcohol may also account for the 

 markings on the fins being brown in ioeniopterus, while in ininctidatus 

 they are bright green, even in alcoholic specimens. 



It is probably safe to adopt the name twniopterKs in jdace of the less 

 ch'Anicteristic putictulatus, under which name it is descjribed by J(irdan 

 & Swain. Scarus diadema C. & V. may be the same species, but this 

 is less certain. 



159. Scarus virginalis Jordan »& Swain. F.oro. 



(Pseudoscarus psittacus Poey ; not of Liniiicns nor of Forskfil.) 



160. Scarus croicensis Bloch. Pallon. 



(PscudoHrnrits sanctiv crucis iiud Fs, IhicQlatus Poey.) 



