1886,] NATURAL SCIENCES OF PHILADELrHTA. 26t 



We luive examined a number of specimens from Havana, 

 ranging from 2f to 10 inches in length. 



Head 3^ ; depth If ; scales 5-38-10. D. IX, 10 ; A. II, 9. 



Body much compressed, rhomboidal in form, the back much 

 elevated ; profile evenly convex to supraorbital where there is a 

 slight depression ; snout somewhat pointed ; mouth rather large ; 

 end of maxillary reaching to vertical from centre of pupil, its 

 length 3 in head. Exposed portion of the maxillary oblong, its 

 width about 2| in its length, which is 4^ in head. Ej-e 3j in head ; 

 snout 4 in head ; interorbital area 3;^ in head. Gill-rakers stronger 

 than in gida or olisthostoma 18 below the angle. PremaxilJary 

 groove broad, oval and free from scales. Pectoral fins reaching 

 to front of anal, their length 3 in length of body ; ventral fins 

 reaching be3'ond vent, their length 4^ in length of bod3^ Second 

 dorsal spine stronger, but shorter than third and fourth, its length 

 about i^ in length of body ; margin of fin falcate. Suborbital 

 entire ; preopercle entire. Caudal peduncle 2 in length of head. 

 Anal spine constantly two in number. Second anal spine 1| in 

 length of hea(J. 



Color silvery, with bluish reflections, darker above ; margin of 

 dorsal fin black ; fins rather pale ; ventrals and anal with dusky 

 punctulations ; snout dusky ; no distinct dark lines along the rows 

 of scales. 



11. Gerres olisthostoma. 



Gerres rJtombeus'Poey, Kep. Pise. Cub., 316, 1865 (Havana); Poey, Syn. 



Pise. Cub., 331, 1868 (Havana). 

 Mojarra rTiomhea Poey, Enum. Pise. Cub., 51, 1875 (Havana); Poey, 

 Enum. Pise. Cub., 327, 1877 (Havana) (not Oerres rhonibeus 



C. & v.). 



Oerres olisthostoma Goode & Bean, Proc. U. S. Nat. Mus., 1882, 423 

 (Indian River, Florida); Jordan & Gilbert, Syn. Fish. N. A., 934, 

 1883 ; Eveimann & Meek, Proe. Acad. Nat. Sei. Phila., 1883, 123 ; 

 Jordan, Proe. U. S. Nat. Mas.. 1884, 130 (Key West); Jordan, Cat. 

 Fish. N. A., 1885, 95. 



Habitat. Coast of Florida and Quba (Key West; Indian River, 

 Fla.; Havana ; San Matheos). 



We have examined specimens from Key West, Havana and San 

 Matheos. They range from 5 inches to a foot in length. 



Head 3^ ; depth 2^ ; scales 5-38-9. D. IX, 10 ; A. Ill, 8. 



Body compressed, rhomboidal in form, back very much ele- 

 vated. Mouth large, maxillary extending to vertical from ante- 



