228 PROCEEDINGS OF THE ACADEMY OP [1884. 



66. Caudal simply lunate, its inner rays about | length outer 

 ra^'S ; caudal lobes subequal, the upper never filamentous ; 

 color olive-brown, more or less distinctly greenish ; 

 middle of sides paler; sides with about twelve distinct 

 blaclvish vertical bars, ratlier narrower than the inter- 

 spaces, most distinct over front of anal ; a brownish 

 stripe along base of dorsal ; spinous dorsal with alternate 

 stripes running upward and backward, of dark blue and 

 bronze olive, the two colors of about equal width ; soft 

 dorsal with a bluish streak on the anterior side of each 

 ray, and a bronze stripe behind it ; head 3^ in length of 

 body. D, IX-26 ; A. 111-24. hepatus. 3. 



1. Teathis cceruleus. 



Turdus rhomboidalts (The Tang), Catesby, Nat. Hist. Carolina, etc., ii, 



1743, pi. 10, fig. 1 (Bahamas). 

 Teuthis fusca caruleo nitens Brown, Jamaica, 1756, 454 (Jamaica). 

 Barbero Parra, Descr. Dif. Piezas, Hist. Nat,, 1787, 45, Taf. 21, fig. 2 



(Cuba), 

 Acanthurus cceruleus Bloch & Schneider, Systema Ichthyoi., 1801, 214 



(after Catesby, Parra & Brown) ; Cuvier & Valenciennes, Hist. Nat. 



Poiss., X, 1835, 179 (Martinique ; Porto Rico ; San Domingo) ; Giinther, 



Cat. Fish. Brit. Mus., 1861, 336 (Caribbean Sea ; West Indies ; Bahia) ; 



Poey, Syn. Pise. Cub., 1868, 355 (Cuba) ; Jordan & Gilbert, Syn. 



Fish. N. A., 1882, 617, 



Acanthurus broussonnetii Desmarest, Prem, Dec, Ichthyoi., 1823, 26, 



pi. 4, fig. 2 (Cuba). 

 Acanthurus brevis Poey, Memorias, ii, 1860, 207 (Cuba ; young) ; Poey, 



Syn, Pise. Cub,, 1868, 355 (Cuba) ; Poey, Enum. Pise, Cub,, 1875, 



66 (Cuba). 



Acronurus cceruleatus Poey, Enum. Pise. Cub., 1875, 69 (Cuba ; larval 

 form). 



Acanthurus nigricans Goode, Bull. U, S. Nat, Mus., 1876, 41 (Bermu- 

 das) (probably not of Linnaeus, a species of unknown oiigin, as yet 

 unrecognized). 



Habitat. — Atlantic shores of tropical America; Cuba; Key 

 West ; Martinique ; Porto Rico ; San Domingo ; Bahia, 



The synonymy and nomenclature of this beautiful species 

 seem to be subject to no doubts of importance. It is rather 

 less abundant at Key West or at Havana than either of the 

 Other species. One specimen corresponding to A. brevis Poey, 



