240 FISHES OF WESTERN SOUTH AMERICA 
Serrasalmus spilopleura Norman, 1928, Proc. Zool. Soc. London, 798, fig. 13. 
Serrasalmo oesopus Cope, 1871, Proc. Acad. Nat. Sci. Phila., XXIII, 269, Amazons between Rio 
Huallaga and Rio Negro; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 442; 
Eigenmann, 1915, Ann. Carnegie Mus., [X, 252, doubtfully separable from the preceding. 
Serrasalmus oesopus Fowler, 1906 (1907), Proc. Acad. Nat. Sci. Phila., LVIII, 469, fig. 53. 
The oesopus material is limited to a single specimen in the museum of the 
Philadelphia Academy. 
292. SERRASALMUS ELONGATUS [Kner 
Serrasalmo elongatus Kner, 1860, Denksch. Kix. Akad. Wiss. Wien, XVIII, 44, pl. v, fig. 12; 
Ginther, 1864, Cat. Fish. Brit. Mus., V, 371; 
Steindachner, 1882 (1883), Denksch. KIx. Akad. Wiss. Wien, XLVI, 16, Rio Huallaga, one 
specimen, 140 mm.; 
Jigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 442; 
Higenmann, 1915, Ann. Carnegie Mus., LX, 250. 
Serrasalmus elongatus Norman, 1928, Proc. Zool. Soc. London, 806, fig. 18, one, 180 mm., Solimoes. 
Huallaga basin to that of the Guaporé 
15696, 2, 110 and 200 mm.. Yarinacocha, Allen, August, 1920. 
293. SERRASALMUS RHOMBEUS (Linnaeus) 
Salmo rhombeus Linnaeus, 1766, Syst. Nat., ed. 12, I, 514, Surinam; 
Gmelin, 1788, Syst. Nat., I, 686, no. 28; 
Bloch, 1794, Ausl. Fische, VIII, 112, pl. 383; 
Bloch and Schneider, 1801, Syst. Ichth., 404. 
Serrasalmo rhombeus Lacépeéde, 1804, Hist. Nat. Poiss., V, 284; 
Cuvier, 1919, Mém. Mus. Hist. Nat., V, 367; 
Cuvier and Valenciennes, 1848, Hist. Nat. Poiss., X XII, 272; 
Castelnau, 1855, Anim. Amér. Sud, Poiss., pl. xxxvil, fig. 3; 
Ginther, 1864, Cat. Fish. Brit. Mus., V, 369, Guianas; 
Eigenmann and Eigenmann, 1891, Proc. U. 8. Nat. Mus., XTV, 60; 
Figenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, IIT, 442; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 382; 
Higenmann, 1915, Ann. Carnegie Mus., [X, 254, pl. Iviii. 
Serrasalmo (misspelled Serrasalimo) ¢mmaculatus Cope, 1878, Proc. Amer. Phil. Soc., XVII, 692, 
Rio Maranon; 
Fowler, 1906 (1907), Proc. Acad. Nat. Sci. Phila., LVIII, 471, fig. 54, with notes on the types; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, IIT, 442. 
Serrasalmus rhombeus (in part), Norman, 1928, Proc. Zool. Soc. London, 800, fig. 14, one, collected 
by Higgins, Xeberos; 
Fowler, 1939 (1940), Proce. Acad. Nat. Sei. Phila., NCI, 271, prrana. 
Amazonia to the Guianas 
Cope’s Maranon material supposedly distinguished from his oesopus by smaller 
scales and elongate snout; Haseman reports a jet-black phase from Santarem. 
