CHECK-LIST OF NORTH AMERICAN FISHES. 267 



571. Tetragonopterus cerstedii Kroyer. 



Eio San Juan, Nicaragua. 



Tetradonopierus wrstedii Kroyer, in Liitken, let. Bidrag, iii, 229, 1874, Rio San 

 Juan, Nicaragua. 



572. TetragonopteruTi petenensis Giinther. 



Lake Peteu to western Ecuador; southeast to Argentine Republic. 

 Tetragonopterus petenensis Giinther, Cat., v, 326, 1864, Lake Teten. 



573. Tetragonopterus scabripinnis Jenyns. 



Jamapa, Mexico, to Rio Janeiro. 



Tctrmionopterns scahripinnis Jenyns, Zool. Beagle, Fishes, 12.5, 1842, Rio 

 Janeiro, Brazil. 



574. Tetragonopterus humilis Giinther. 



Lake Aniatitlau, Guatemala. 



Tetragonopterus humilis Giinther, Cat., v, 327, 1864, Lake Amatitlan, Guate- 

 mala. 



575. Tetragonopterus brevimanus Giinther. 



Guatemala. 



Tetragonopterus hrerimanus Giinther, Cat., v, 32.5, 1864, Yzabal; Rio San 

 Geronimo, Guatemala. 



576. Tetragonopterus niexicanus Filippi. 



Lakes about the City of Mexico. 



Tetragonopterus mexicanus Filippi, in Guerin's Rev. Mag. Zool., 166, 1853, City 

 of Mexico. 



577. Tetragonopterus argentatus (Baird A- Girard). 



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

 recorded, probably by error, from Arkansas. 



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

 Rio Nueces, Rio Leona, Zoquito, Comancho Spring, Elm Creek, Turkey 

 Creek, Sau Felipe, Devil River, Brownsville, and Rio Sabinal. 



Genus 142. BRYCON Miiller & Troschel. 

 Brycon Miiller & Troschel, Horre IchthyologiiTn, i, 15, 1845 (falcatus). 



Subgenus CHALCIXOPSIS Kiier. 



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



578. Brycon dentex Giinther. 



Yucatan to Ecuador. 



Brycon dentex Giinther, Proc. Zool. Soc. Loud. 1860, 240, Esmeraldas, Ecuador. 



579. Brycon striatulus (Kner). 



Rio Chagres and streams about Panama. 



Chalcinopsis striatulus Kner, Sitzber. Akad. Wiss. Miinclien, 223, 1863, Panama. 



Genus 143. GASTEROPELECUS (Gronow) Pallas. 



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



580. Gasteropelecus niaculatus Steindachner. Peche Pechc. 



Rio INIamoni, near Panama. 



Gasteropelecus maculatus Steindachner, Fluss-FischeSiidamerikas, 168, 1879, 

 Rio Mamoni, at Chepo, Panama. 



Genus 144. RCEBOIDES Giinther. 



Bwhoides Giinther, Cat., V, 347, 1864 {microle.pis). 



581. Roeboides guatenialensis (Giinther). 



Rio Chagres and streams of Guatemala. 



Anacyrtus guatenialensis Giinther, Cat., v, 347, 1864, Rio Chagres; Huamuchal. 



