CHECK-LIST OF NORTH AMERICAN FISHES. 267 



571. Tetragonopterus oerstedii Kroyer. 



Rio San Juan, Nicaragua. 



Tetragonopterus (trstedii Kroyer, in Liitken, let. Bidrag, in, 229, 1874, Rio San 

 Juan, Nicaragua. 



572. TetragonopteruTi petenensis Giintber. 



Lake Peteu to western EcuacTor ; soutlieast to Argentine Republic. 

 Tetragonopterus petenensis GUntber, Cat., V, 326, 1864, Lake Peten. 



573. Tetragonopterus scabripinnis Jeuyns. 



Jamapa, ^Mexico, to Rio Janeiro. 



Tetragonopterus scabripinnis Jenyns, Zool. Beagle, Fishes, 125, 1842, Rio 

 Janeiro, Brazil. 



574. Tetragonopterus humilis Giinther. 



Lake Aniatitlau, Guatemala. 



Tetragonopterus linmiUs Giintlier, Cat., v, 327, 1864, Lake Amatitlau, Guate- 

 mala. 



575. Tetragonopterus brevimanus Giinther. 



Guatemala. 



Tetragonoiyterus hrevimanus Giinther, Cat., v, 325, 1864, Yzabal; Rio San 

 Geronimo, Guatemala. 



576. Tetragonopterus mexicanus Filippi. 



Lakes about the City of Mexico. 



Tetragonopterus mexicanus Fili]>pi, in Guerin's Rev. Mag. Zool., 166, 1853, City 

 of Mexico. 



577. Tetragonopterus argentatus (Baird & Girard). 



Southern Texas and Mexico (Rio Nueces, Rio Leona, and Rio Grande) ; also 

 recorded, ])r()bably by error, from Arkansas. 



Astyanax argentatus Haird &. Girard, Proc. Ac. Nat. Sci. Phila., vii, 1854, 27, 

 Rio Nueces, Rio Leona, Zoquito, Comanche Spring, P^lm Creek, Turkey 

 Creek, San Felipe, IJevil River, 13rownsville, and Rio Sabinal. 



Genus 142. BRYCON Miiller & Troschel. 

 Brycon Miiller &, Troschel, HoriB Ichthyologife, i, 15, 1845 (falcatus). 



Subgenus OHALCINOPSIS Kiier. 



Chalcinopsis Kner, Sitzber. Akad. Wiss. Miinchen, 226, 1863 (striaiulus). 



578. Brycon dentex Giinther. 



Yucatan to Ecuador. 



Brycon dentex Giinther, Proc. Zool. Soc. Loud. 1860, 240, Esmeraldas, P^cuador. 



579. Brycon striatulus (Kner). 



Rio Chagres and streams about Panama. 



Chalcinopsis striatulus Kner, Sitzber. Akad. Wiss. Miinchen, 223, 18()3, Panama. 



Genus 143. GASTEROPELECUS (Gronow) Pallas. 



GasteropelccuH Gronow. Mus. Ichthyol., ii. 7, 1763 (nonbinomial). 



580. Gasteropelecus maculatus Steindachner. Peche I'cchv. 



Rio Mamoni, near Panama. 



Gasteropelecus maculatus Steindachner, Fluss-lMscIie Siichinierika.s, 168, 1879, 

 Rio Mamoni, at Chepo, Panama. 



Genus 144. RCEBOIDES Giinther. 



limhoidcs Giiuther, Cat., v, 347, 1864 (microlepis). 



581. RoBboides guatemalensis (Giinther). 



Rio Chagres and streams of Guatemala. 



Anacyrtiis guatemalensis Giiuther, Cat., v, 347, 1864, Rio Cliagres; Hnaniuchal. 



