1886.] NATURAL SCIENCES OF PHILADELPHIA. 260 



Preorbital and preopercle serrate ; premaxillary groove broad, 

 narrowed posteriorly, entirely free from scales. Gill-rakers 

 short and weak, 11 below the angle; eye small, 3| in length of 

 head ; snout 3| in length of head. Dorsal spines rather strong 

 and stiff, second and third subequal in length, the second much 

 the stronger, its length If in length of head, upper margin of 

 dorsal fin falcate. Second and third anal spines subequal, the 

 second much the stronger, its length 1| in length of head. 

 Least depth of caudal peduncle 2^ in length of head. 



Color silvery gray, with bluish reflections, darker above, a dark 

 streak along each row of scales, most conspicuous on upper part 

 of bod}^ ; tins all dusky except pectorals, which are pale ; dorsal 

 and anal blackish on their margins, A dark supraorbital spot; 

 axil dusky. 



The description of Gerres hrasilianus Cuv. and Yal, is very 

 poor indeed, Dr, Jordan has examined the type, and we here 

 give a copy of his notes : " The type of this species is in very 

 bad condition, unfit for detailed description. Sides apparently 

 with dark stripes along the rows of scales. Preorbital and pre- 

 opercle serrate. Frontal groove broad, naked. Longest dorsal 

 spine 5 in body. Second anal spine 5^. Anal spines 3 in number. 

 Caudal fin long. This species is allied to G. plumieri, but the 

 back is less elevated and the spines smaller than in the latter." 



The above agrees very well with our specimens from Charles- 

 ton and Havana, the latter being evidently identical with the 

 Gerres patao of Poey. 



i;^. Gerres lineatus. 



Smaris lineatus Humboldf, Observ, Zool., i=, 185, PI. 43, 1807-1834 



(Acapulco). 

 Oerres lineatus Cuvier and Valenciennes, Hist. Nat. Poiss., vi, 470, 



1830 (Description from Humboldt); Jordan fe Gilbert, Bull. U. S. 



Fish Comm., 1881, 330 (Mazatlan ; San Bias); Jordan & Gilbert, 



Bull. U. S. Fist Comm., 1882, 108 (Mazatlan); Jordan & Gilbert, 



Bull. U, S, Nat, Mus., 1882, 377 (Fresh-water Lake at Acapulco); 



Evermann & Meek, Proc. Acad. Nat, Sci. Phila., 1883, 123 ; Jo: dan, 



Cat. Fish. N. A., 1885, 95. 

 Gerres axillaris Giinther, Proc. Zool. Soc. London, 1864, 102 ; Giinther, 



Fish. Cent. Amer., 448, 1866 (Chiapani); Jordan & Gilbert, Proc. 



U. S. Nat. Mus., 1881, 233 (Name only) (San Bias). 



Habitat. West Coast of Mexico (Acapulco ; Mazatlan ; San 

 Bias ; Chiapam). 



