ANNOTATED LIST OF THE SPECIES ? 
“J 
on 
Acestrorhamphus Eigenmann, 1903, Smithson. Mise. Coll., XLV, 146. 
Sphyraenocharax Fowler, 1906 (1907), Proc. Acad. Nat. Sci. Phila., LVIII, 460, Xiphorhamphus 
abbreviatus Cope. 
Type: Salmo falcatus Bloch 
Guiana and Peru to Rio Sao Francisco and Paraguay 
Premaxillary horizontal, its teeth conical, in a single series; the second tooth 
(or first) and penultimate are exaggerated, sharp, canine; anterior, upper part of 
maxillary but little oblique, its teeth similar to those of the premaxillary, the first 
and fourth or fifth being canine; posterior part of the maxillary abruptly very 
oblique, and, with the exception of the teeth, entirely concealed by the first sub- 
orbital when the mouth is closed; posterior part of the mandible with minute, re- 
curved teeth, preceded by three widely spaced canines, the middle one the largest. 
Pectorals not reaching the remote ventrals, at any rate not overlapping them; 
scales cycloid; lateral line complete; tongue long, free. 
358. ACESTRORHYNCHUS ABBREVIATUS (Cope) 
NXiphorhamphus abbreviatus Cope, 1878, Proc. Amer. Phil. Soc., XVII, 687, Peruvian Amazon, Orton 
collection. 
Acestrorhamphus abbreviatus Eigenmann, 1903, Smithson. Mise. Coll., XLV, 146; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 447. 
Acestrorhynchus abbreviatus Fowler, 1906 (1907), Proc. Acad. Nat. Sci. Phila., LVIII, 461, fig. 49; 
Fowler, 1939 (1940), Proc. Acad. Nat. Sci. Phila., XCI, 274, two, 175 and 180 mm., Bajo 
Ucayali. 
Peruvian Amazon and tributaries 
359. ACESTRORHYNCHUS FALCIROSTRIS (Cuvier) 
Hydrocyon falcirostris Cuvier, 1819, Mém. Mus. Hist. Nat., V, 361, pl. xxvii, fig. 3. 
NXiphorhynchus falcirostris Agassiz, 1829, Sel. Gen. et Spec. Pisce. Bras., 76. 
NXiphorhamphus falcirostris Miller and Troschel, 1845, Horae Ichth., I, 18; 
Ginther, 1864, Cat. Fish. Brit. Mus., V, 354; 
Giinther, 1868, Proc. Zool. Soc. London, 247, Xeberos, Pebas; 
Cope, 1878, Proc. Amer. Phil. Soc., XVII, 688, Peruvian Amazon; 
Steindachner, 1882 (1883), Denksch. KIX. Akad. Wiss. Wien, XLVI, 15, Rio Huallaga, one 
specimen; 
Eigenmann and Eigenmann, 1891, Proc. U. 8. Nat. Mus., XIV, 58. 
Acestrorhynchus falcirostris Fowler, 1906 (1907), Proc. Acad. Nat. Sci. Phila., LVIII, 462; 
Yigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 447; 
Fowler, 1939 (1940), Proc. Acad. Nat. Sci. Phila., XCI, 273, five, 195-264 mm., Bajo Ucayali. 
Peruvian Amazon to Guiana and Matto Grosso 
The vernacular name canero was reported to Steindachner, doubtless meaning 
carnero. This name is well-earned, but evidently is not in common currency today 
for these fishes, but is employed only for Hemicetopsis and certain other Pygidiids. 
