Jordan and Evermann. Fishes of North America. 1373 



Known from Havana ; Jamaica ; Martinique ; Bahamas ; Barbados ; Flor- 

 ida Keys; Mazatlan; Rio Presidio ; Guatemala ; Panama; Chiapas, (ciwe- 

 rcm, ashy gray.) 



Turdus cinereus peltatus (the Shad), CATESBY, Nat. Hist. Carolinas, etc., 1731, Bahamas. 



Mugil cinereus, WALBAUM, Artedi Piscium, 228, 1792, Bahamas; after CATESBY. 



Gerres aprion, CUVIER, Regne Animal, Ed. 2, n, 104, 1829; hased on CATESBY; CUVIER & 



VALENCIENNES, Hist. Nat. Poiss., vi, 461, 1830. 

 Gerres zebra, MULLER & TROSCHEL, Schomburgk, Hist. Barbados, 668, 1848, Barbados; 



GUNTHER, Cat. Fishes, iv, 254, 1862. 

 Gerres squamipinnis, GUNTHER, Cat. Fishes, I, 349, 1859, Jamaica; Guatemala. (Coll. Dr. 



Parnell and Mr. Frank.) 



562. GERRES, Cuvier. 



( MO J ARRAS.) 



Gerres* CUVIER, Regne Anim., Ed. 2, n, 104, 1829 (lineatus, etc.). 



Diapterus, RANZANI, Nov. Comment. Bonon., v, 1841, 340 (auratus). 



Gatochcenum, CANTOR, Cat. Malayan Fishes, 55, 1850 (lineatus, etc.) ; substitute for Gerres, 



CUVIER, regarded by CANTOR as preoccupied by Gerris, FABRICIUS, 1794, a genus of 



insects. 

 Moharra, POEY, Enumeratio, 50, 1875 (rhombea). 



Second interhaemal long and spear-shaped, not excavated and not receiv- 

 ing the end of the air bladder; preopercle serrate; body elevated and 

 more or less rhomboid in form, the third or fourth dorsal spine and the 

 second anal spine more or less elevated. Species numerous. (Gerres, an 

 old name used by Pliny for some fish, perhaps a Spicara. "Fuisse Gerres 

 aut inutiles Ma'iias. Odor impudicus urcei satebatur.") 



a. Preorbital entire ; no distinct dark streaks along the rows of scales. 

 MOHARRA (Mojarra, Spanish name, from muger, Latin mulier, woman). 



b. Anal spines 2 only, the soft rays 9; second dorsal spine about 3 in head; second 

 anal spine 1| ; premaxillary groove broad, scaleless ; body deep. 



RHOMBEUS, 1750. 



DIAPTERUS (6ia, divided, nrepov, fin) : 

 bb. Anal spines 3, soft rays 8. 



c. Premaxillary groove broad, triangular or oval, and free from scales. 



(/. Body ovate, the outline somewhat regularly elliptical, depth 2 in length. 

 Dorsal spines slender, but little flexible, the second scarcely stronger 

 than the third, 2 in length of head. Second and third anal spines 

 subequal, 2g in length of head, second stronger than third. 



AUREOLUS, 1751. 



* The genus Gerres was established by Cuvier in the second edition of the Regne Animal, 

 the name being based on 7 species as enumerated by him, rhombeus, oyena, aprion, poieti, 

 lineatus, argyreus, and ftlaitientosus. One of these speciesmust, therefore, be chosen as the 

 type of Gerres. In 1842 Ranzani established the genus Diapterus on auratus, a species 

 closely related to rhombeus, or rather to the allied olisthostoma. In 1850 the name Cat- 



1 only be used if Gerres is regarc _ ., 



Gerres must be retained, being spelled differently from Gerris. In different publications 



which the name Ericinostomus has been applied in 1855 by Baird and Girard. Although 

 plumieri can not be made the type of Gerres, it seems to us that the cognate species 

 lineatus can be so regarded. If this view is adopted, the restricted Gerres of the present 

 work would correspond exactly with the restricted Gerres of Poey and Gill. This i'act 

 certainly justifies us in choosing lineatus as the type of the genus. 



