266 REPORT OF COMMISSIONER OF FISH AND JFISHERIES, 



Genus 137. PLAGOPTERUS Cope. 

 Plagopierus Cope, Proc. Amer. Phil. Soc. Phila. 1874, 130 {argentissimua). 



563. Plagopterus argentissinius Cope. 



Colorndo I'.iisin in -western Colorado (Cope); Fort Yuma (Gilbert). 

 I'la()ojiU-ruii argeiiiisshiiits Cope, Proc. Amer. PLil. Soc. Phila. 1874, 130, San 

 Luis Valley, Colorado. 



Suborder HETEROGNATHI. 



Family XXXVIII. ERYTHRINIDiE. 



Genus 138. MACRODON Miiller. 



Macrodon Miiller, Archiv Auat., 1842, 308 (trahira^^malabaricus). 



564. Macrodon microlepis Giinther. 



Panama to Ecuador, chiefly west of the Andes; known from Rio Chagres 



and from Ecuador. 

 Macrodon microleins Giinther, Cat., v, 282, 1864, western Ecuador; Chagres 



River, Guatemala. 



Family XXXIX. CHARACINIDiE. The Characins. 



Genus 139. CURIMATA (Cuvier) Cloquet. 



Curimata Cuvier, in Cloquet, Diet. Hist. Nat., xii, 240, 1818 {edenUda). 



565. Curimata magdalenae Steindachner. Sardina Blanca. 



Rio Magdalena and Rio Mamoni, Colombia. 



Curimatiis magdalena', Steindachner, Fisch-Fauna dea Magdalenen-Stromes, 

 34, 1878, Rio Magdalena, Colombia. 



Genus 140. PIABUCINA Cuvier & Valenciennes. 

 Piabucina Cuvier & Valenciennes, Hist. Nat. Poiss., xxii, 161, 1849 {erythri- 

 noides). 



566. Piabucina panamensis Gill. 



Rio Frijoli, Atlantic Slope of Isthmus of Panama. 



Piahucina panamensis Gill, Proc. Ac. Nat. Sci. Phila. 1876, 336, Rio Frijoli, 

 Isthmus of Panama. 



Genus 141. TETRAGONOPTERUS Cuvier. 



Tetragonopterus (Artedi) Cuvier, Regue An., ii, 166, 1817 (argenteus). 



Subgenus ASTYANAX Bairtl & Girard. 



Astyanax Baird & Girard, Proc. Ac. Nat. Sci. Phila. 18.54, 26 {argentatus). 



567. Tetragonopterus aeneus Giinther. 



Oaxaca, Mexico, and Rio Chagres, south to Brazil. 



Tetragonopterus wneus Giinther, Proc. Zool. Soc. Lond. 1860, 319, Oaxaca, 

 Mexico. 



568. Tetragonopterus rutilus Jenyns. 



Mexico to Ecuador and Rio de la Plata; recorded as common in Central 



America. 

 Tetragonopterus rutilus .Jenyns, Zool. Beagle, Fishes, 125, 1842, Rio Parana, 



South America. 



569. Tetragonopterus panamensis Giinther. 



Streams about Panama and Lake Yzabal. 



Tetragonopterus panamensis Giinther, Cat., v, 324, 1864, Panama; Lake Yzabal. 



570. Tetragonopterus microphthalmus Giinther. 



Guatemala (Lake Ainatitlau) to Peru. 



Tetragonopterus mierophihalnius Giinther, Cat., v, 324, 1864, Lake Amatitlan; 

 liio Rimao, Peru. 



