1376 Bulletin 4.7, United States National Museum. 



yellow. Panama; only the original type, 5J inches long, known, (aureo- 

 lus, gilded.) 



Gerres aureolus, JORDAN & GILBERT, Bull. I, U. S. Fisli Comm. 1881 (1882), 328, Panama 

 (Coll. C. H. Gilbert) ; EVERMANN & MEEK, I. c., 266. 



1752. GERRES PERUVIANUS, Cuvier & Valenciennes. 



(MOJARRA DE LAS ALETAS AMARILLAS.) 



Head 3; depth 2. D. IX, 10; A. Ill, 8; eye 3 in head, snout slightly 

 shorter; pectoral equaling head; ventralsl^; second dorsal spine li 1 ^; second 

 anal spine 1^. Body rhomboidal, short and deep, with angular outlines, 

 the depth usually about half length; preopercle finely serrate; edge of 

 preorhital entire; spines long and slender; second dorsal spine, when 

 depressed, reaching to the base of the third or fourth dorsal ray ; posterior 

 outline of spinous dorsal deeply concave; pectoral long and falcate, reach- 

 ing past front of anal ; second and third anal spines about equal in length, 

 longer than the soft rays, and when depressed, reaching past tip of last 

 ray; ventral spine reaching vent, the rays reaching midway between vent 

 and anal spines. Pr em axillary groove broad, triangular or oval, and free 

 from scales. Color silvery, without dark streaks or bars ; fins pale ; caudal 

 and anal yellow. Pacific coast of tropical America ; very common ; known 

 from Mazatlau, Salina Cruz, Chiapas, Panama, Payta, and Guayaquil. 

 Length 5 to 8 inches. 



Gerres peruvianus, CDVIER & VALENCIENNES, Hist. Nat. Poiss., vi, 467, 1830, Payta, 



Northern Peru; EVERMANN & MEEK, I. c., 266. 

 Gerres brevirostris* SAUVAGE, Bull. Soc. Philom. Paris, in, 1879, 208, Rio Guayas, Equador. 



(Coll. Andre.) 



1753. GERRES OLISTHOSTOMUS,t Goode & Bean. 



(IRISH POMP ANO ; MUTTON FlSH.) 



Head 3; depth 2. D. IX, 10; A. Ill, 8; scales 5-37-9. Body rhomboid, short 

 and deep, the back elevated, the anterior profile short and very steep ; mouth 

 rather large; teeth slender, brush-like; preorbital entire ; preopercle and 

 interopercle serrate ; groove on top of head, for reception of premaxilla- 

 ries broad, rounded behind, with a median linear depression, its surface 



* Gerres brevirostris is thus described : 



obtus, plus court que 1'oeil, dont le diametre est compris trois fois dan 



tete; espace interorbitaire moins large que 1 



ie I'ceil. Processus de I'iatermaxillaire depourvu 

 [ii'au niveau du bord posterieur de 1'ceil. Deuxi- 



d'6cailles et se prolongeant presque jusq 



erne et troisieme epines dorsales de meme hauteur, aussi 



lantesquela distance quisepare 



ant cette ligue rostrale, 



liio Guayas (Equateur) : Andre. 



cK eievttwu ; iieau o$ ; ueptn ^ ; eye in ueaa 6^ ; second uorsai spine J^ ; seconu anal spine 

 , shorter than third; pectoral reaching second anal spine, slightly longer than head; 

 udal slightly shorter than head; scales 41. D. IX, 10; A. Ill, 8. 



