PBOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 279 



4. Zbbrasoma. 

 Synony7ny. 



Tf Scopas, Bonaparte, Giorn. Arcad. di Scienze, t. 52 (Saggio Distrib. Metod. Animali 



Vertebr. a sangue freddo, p. 34)* 1833. 

 >Harpuru8, Sivainsan, Nat. Hist, and Class. Fishes, «fcc., v. 2, pp. 256, 1839 (not For- 



skiil). 

 ]>Zebrasoma, Sicainson, Nat. Hist, and Class. Fishes, «tc. v. 2, pp. 256, 1839. 

 =Acanthurus ($ 4), aUnther, Cat. Fishes, Brit. Mus., v. 3, pp. 326, 342, 1861. 

 =Acanthurus D. Harpurus, Day, Fishes of India, v. 1, pp.202, 207, 1876. 



Teuthidids with a pair of movable antrorse spines, movable setiform 

 teeth with dilated apices, 5-rayed ventrals, and 3 to 5 dorsal spines. 

 Type. — Z. velifer, (Bloch). 



5. Ctenoch^tus. 



Synonymy. 



TfCtenodon, Bonaparte, Giorn. Arcad. di Scienze, t. 52 (Saggio Distrib. Metod. Ani- 

 mali, a sangue freddo, p. 34), 1833 ; not described nor type specified. 

 <^Ctenodon, Swainson. 



=Acanthuru8, § 3, GUnther, Cat. Fishes Brit. Mus., v. 3, pp. 326, 342, 1861. 

 =Acanthurus C. Ctenodon, Day, Fishes of India, v. 1, pp. 202, 207, 1876. 



Teuthidids with a pair of movable antrorse spines, fixed strong teeth, 

 5-rayed ventrals, and 8 dorsal spines. 

 Type. — C. strigosus=Acanthiirus strigosus, Bennett. 



6. COLOCOPTJS. 



Synonymy. 



= Acanthurus $ 2, Giinther, Cat. Fishes Brit. Mus., v. 3, pp. 325, 341. 

 = Acanthuru8, "B," Day, Fishes of India, v. 1, pp. 202, 206, 1876. 



Teuthidids with a pair of antrorse movable spines, strongly fixed teeth, 

 3-rayed ventrals, and 9 dorsal spines. 



Type. — C. lamhdurus (new name) = Acanthurus hepatus (Bloch, 

 Schneider) Giinther Fische Siidsee, B, 1, p. 115, pi. 75 (not Teuthis 

 hepatus, Linn.). 



II.— SIGANID^. 



Synonyms as families. 



■< Chsetodonia, Baf., Analyse de la Nature, 5e. fam., 1815. 

 <Theutyes, Cuvier, E^gne Animal, 2. ed., t. 2. p. 222, 1829. 

 < Teuthides, LaireiUe, Fam. Nat. du Rfegne Animal, p. 130, 1825. 

 <Teuthyes, Cuv. 4' Val., Hist. Nat. des Poissons, t. 10, p. Ill, 1835. 

 = Teuthididae, Bon., Giorn. Arcad. di Scienze, v. 52, p. — , (Saggio Distrib. Metod. Ani- 

 mali Vertebr. a sangue freddo, p. 34), 1832. 

 <^ SiganoidesB, Bichardson, Fauna. Bor.-Am., vol. 3, p. 86, 1836. 

 = Teuthidid», Bichardson, Encycl. Brit., vol. 12, p. 304, 1856. 



* No diagnosis. No type la given. 



