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FISHES OF WESTERN SOUTH AMERICA 
360. ACESTRORHYNCHUS HETEROLEPIS (Cope) 
Xiphorhamphus heterolepis Cope, 1878, Proc. Amer. Phil. Soc., XVII, 687, Rio Marafion, Orton 
collection. 
Acestrorhynchus heterolepis Eigenmann, 1903, Smithson. Misc. Coll., XLV, 146; 
Fowler, 1906 (1907), Proc. Acad. Nat. Sci. Phila., LVIII, 462, fig. 50; 
HKigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 447. 
Peruvian Amazonia 
361. ACESTRORHYNCHUS FALCATUS (Bloch) 
Salmo falcatus Bloch, 1794, Ausl. Fische, VIII, 120, pl. 385. 
NXiphorhynchus falcatus Cuvier and Valenciennes, 1848, Hist. Nat. Poiss., XXII, 337, part, Surinam; 
Castelnau, 1855, Anim. Amér. Sud, Poiss., 75, Amazon. 
Xiphorhamphus falcatus Miller and Troschel, 1845, Horae Ichth., I, 17; 
Gunther, 1864, Cat. Fish. Brit. Mus., V, 354. 
Acestrorhynchus falcatus Eigenmann, 1903, Smithson. Mise. Coll., XLV, 146; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 447; 
Jigenmann, 1912, Mem. Carnegie Mus., V, 407, pl. Ixi, fig. 3. 
NXiphorhamphus ferox Giinther, 1863, Ann. Mag. Nat. Hist., (8), XII, 443; 
Giinther, 1864, Cat. Fish. Brit. Mus., V, 355; 
Ginther, 1868, Proc. Zool. Soc. London, 229, R. Huallaga, Bartlett. 
Guianas to Rio Paraguay 
362. ACESTRORHYNCHUS MICROLEPIS (Schomburgk) 
Hydrocyon microlepis Schomburgk, 1841, Fish. Brit. Guiana, I, 247. 
Xiphorhamphus microlepis Miller and Troschel, 1845, Horae. Ichth., I, 18; 
Miller and Troschel, 1848, in Schomburgk, Reisen, ITI, 636; 
Giinther, 1864, Cat. Fish. Brit. Mus., V, 355; 
Steindachner, 1882 (1883), Denksch. Kx. Akad. Wiss. Wien, XLVI, 14, Rio Huallaga and 
Iquitos, two; 
Eigenmann and Eigenmann, 1891, Proc. U. 8. Nat. Mus., XIV, 58. 
Acestrorhynchus microlepis Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, II, 447; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 408. 
Guianas to Rio Huallaga 
363. ACESTRORHYNCHUS CACHORRO Fowler 
Acestrorhynchus cachorro Fowler, 1939 (1940), Proe. Acad. Nat. Sci. Phila., XCI, 274, fig. 61, Bajo 
Ucayali. 
Known from the types at Philadelphia. 
Near A. microlepis (Schomburgk). Cachorro a local name. 
Sixth Division—Erythrinine Group of Subfamilies 
Subfamily: LEBIASININAE 
By reason of the close affinity shown by Gregory and Conrad to exist between 
the Erythrininae and the more primitive Characinae, such as Brycon, Piabucina, 
