Jordan and Evcrmann. — Fishes of North America. 1373 



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

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

 rena, ashy gray.) 



Titrdus cineretts peliatus (the Shad), Catksby, Nat. Hist. Carolinas, etc., 1731, Bahamas. 



Mugilcinereus,W ALB A\JM, Artedi Piscium, 228, 1792, Bahamas; after Catesby. 



Gerres aprion, Cuvieb, Eegne Animal, Ed. 2, n, 104, 1829; based on Catesby ; Ouvier & 



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

 Gerres zebra, Mi'iller & Troschel, Schomburgk, Hist. Barbados, 668, 1848, Barbados; 



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

 Gerres squamipinnis, Gunther, Cat. Fishes, l, 349, 1859, Jamaica; Guatemala. (Coll. Dr. 



Parnell and Mr. Frank.) 



562. GERRES, Cnvier. 



(MOJAHKAS.) 



Gerres* CnviER, R^gne Anim., Ed. 2, 11, 104, 1829 (Uneatus, etc.). 

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

 Oatoch(£nnm, Cantor, Cat. Malayan Fishes, 55, 1850 (Uneatus, etc.) ; substitute for Gerres, 



CnviER, regarded by Cantor as preoccupied by Gerris, Fabricius, 1794, a genus of 



insects. 

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



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

 ing the end of the air bladder ; prcopercle 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 fi.sh, perhaps a Spicara. "Fuisse Gerres 

 aut inutiles Mu'uas. Odor impudicus urcei satebatur.") 



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

 MoHAERA (Mojarra, Spanish name, from imtger, Latin vmlier, woman). 



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

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

 T^ ,.,,..,, RHOMBEUS, 1750. 



Diapterus (&16., divided, nTipov, fin) : 

 lb. Anal spines 3, soft rays 8. 



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



(I. Body ovate, the outline somewhat regularly elliptical, depth 2Jin 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 Cuvior in the second edition of the Regne Animal, 

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

 hneatus, argyreus, and filamentosus. 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 tlio allied olistho stoma. In 1850 the name Gat- 

 ochcenum was proposed by Cantor as a substitute for Gerres, reg.arded as preoccupied by 

 the earlier name Gerris, applied by raliri( ins to a genus of insects. .The name Catoch- 

 cenum can only be used if Gerres is re^ardt-d as ineligible. By the rules followed by us 

 Gerres must be retained, being spelled diffeiiiitlv from Gerris. In diflerent publications 

 ot Voey, plumien is made the type of Gerres, although it is not one of Cuvicr's oii-iiial 

 species. Bleeker substitutes ZKap^ez-Ms for Gerres and Catochcenum., specil'viiii; />Iiimirri 

 as its type, while Gill and Poey have used the name Diapterus for the allies of (i"^", t" 

 which the name Eucinostomus has been applied in 1855 by Baird and Giiard. Ahliough 

 plumieri c^n not be made the type of Gerres, it seems" to us that the cognate species 

 Uneatus 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 fact 

 certainly j ustiiies us in choosing Uneatus as the tyue of the genus. 



