268 PROCEEDINGS OF THE ACADEMY OP [188G. 



rior portion of pupil, its length 2| in head ; exposed portion 

 oblong, its width 2^ in its length, which is 4 to i^ in head. 



Preorbital entire ; preopercle serrate ; premaxillary groove 

 broad, closely covered with small scales (an important diagnostic 

 character); gill-rakers weak, 11 below the angle. Eye 3^ in head ; 

 interorbital space 3^, and snout about 3^ in head. Distance from 

 snout to dorsal fin about 2^ in length. Second dorsal spine 1^ to 

 1^ in head ; third about equal to second, the others decreasing in 

 length, the sixth being but one-half length of second the general 

 outline of upper margin of spinous dorsal being sickle-shaped. 

 Pectorals reaching slightly beyond front of anal, and equal a little 

 less than one-third length of body. Yentrals reaching just beyond 

 vent and are one-fourth length of body. Anal spines always 3. 

 Second anal spine stout, about If in head. Least depth of caudal 

 peduncle about 2^ in head. 



Color silvery with bluish reflections, darker above. No distinct 

 dark lines along rows of scales. Dorsal, ventrals and anal dusk}^, 

 other fins paler. A dark supraorbital spot ; snout dusky. 



This species has, until lately, been confounded with(r. rhombeus. 



12. Gerres brasilianus. 



Oerres brasilianus Cuvier & Valenciennes, Hist. Nat. Poiss., vi, 458, 

 1830 (Brazil; Porto Rico); Poey, Rep. Pise. Cub,, i, 315, 1865 

 (Havana); Poey, Syn. Pise. Cub., 320, 1868 (Havana); Poey, Enum. 

 Pise. Cub., 50, 1875 (Havana); Poey, Enum. Pise. Cub., 327, 1877 

 (Havana); Evermann & Meek, Proc. Acad. Nat. Sci. Phila., 1883, 

 124 ; Jordan, Proc. Acad. Nat. Sci. Pliila., 1883, 289 (Notes on type). 

 Oerres patao Poey, Memorias Cuba, ii, 192, 1858 (Havana); Poey, Syn. 

 Pise. Cub., 320, 1868 (Havana); Poey, Enum. Pise. Cub., 50, 1875 

 (Havana); Glinther, Cat. Fish. Brit. Mus., iv, 253, 1862 (Copied); 

 Evennann & Meek, Proc. Acad. Nat. Sci. Phila., 1883, 123. 



We have examined a veiy large specimen of this species col- 

 lected at Charleston, South Carolina, by Mr. Charles C. Leslie, 

 as well as numerous smaller ones from Havana. 



Head 8f ; depth 2i ; scales 5-38-9; D. IX-10; A. Ill-t or 8. 



Body compressed, rhombojjdal ; back very much elevated ; 

 profile nearly straight from spinous dorsal to premaxillary 

 groove, where there is a slight depression. Snout conical, bluut- 

 ish ; mouth rather large ; maxillary reaching slightly beyond 

 the vertical from anterior margin of pupil, its length 2| in 

 length of head. Exposed portion of maxillary oblong, its width 

 2^ in its length, its length 4^ in length of head. 



