ANNOTATED LIST OF THE SPECIES 273 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 444; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 396. 
Cynodon (part) Steindachner, 1882 (1883), Denksch. KK. Akad. Wiss. Wien, XLVI, 15. 
Type: Hydrocyon scomberoides Cuvier 
Rio Orinoco and Guianas to Rio Araguay and Peru 
Caudal fin rounded and anal fin short; dorsal in advance of the anal; anal and 
caudal fins scaled, the scales ctenoid, with pectinate or serrate margins; anal rays 
about thirty-five. 
354. HyDROLICUS SCOMBEROIDES (Cuvier) 
Hydrocynus scomberoides Cuvier, 1817, Régne Anim., IT, 168. 
Hydrocyon scomberoides Cuvier, 1819, Mém. Mus. Hist. Nat., V, 357, pl. xxvii, fig. 2. 
Hydrolicus scomberoides Miller and Troschel, 1845, Horae Ichth., I, 19, pl. v, fig. 2; 
Cope, 1872, Proc. Acad. Nat. Sci. Phila., LVIII, 292, between Rios Ucayali and Negro, Perk- 
ins collection; 
Eigenmann and Eigenmann, 1891, Proc. U.S. Nat. Mus., XIV, 59; 
Fowler, 1906 (1907), Proc. Acad. Nat. Sci. Phila., LVIII, 466; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 444; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 396; 
Fowler, 1939 (1940), Proc. Acad. Nat. Sci. Phila., XCI, 267, three, 143-180 mm., Contamana. 
Cynodon scomberoides Cuvier and Valenciennes, 1848, Hist. Nat. Poiss., X XII, 324; 
Castelnau, 1855, Anim. Amér. Sud, Poiss., 75, pl. xxxix, fig. 2; 
Ginther, 1864, Cat. Fish. Brit. Mus., V, 358; 
Steindachner, 1882 (1883), Denksch. KK. Akad. Wiss. Wien, XLVI, 15, Iquitos, two, 230 
and 260 mm. 
Caribbean countries to Amazon and Araguay 
15733, 1, 210 mm., czrca, Lago Sanango, Allen, November, 1920. 
, 1, 260 mm., czrca, Manaos, Allen, December, 1920. 
15728, 1, 253 mm., Lago Cashiboya, Allen, August, 1920. 
15729, 1, 295 mm., Gosulimacocha, Allen, October, 1920. 
355. HybpROLICUS PECTORALIS (Giinther) 
Cynodon pectoralis Giinther, 1866, Ann. Mag. Nat. Hist., (3), XVIII, 30; 
Giinther, 1868, Proc. Zool. Soc. London, 247, Xeberos. 
Hydrolicus pectoralis Cope, 1878, Proc. Amer. Phil. Soc., XVII, 688, Nauta, six, Orton collection; 
Fowler, 1907, Proc. Acad. Nat. Sei. Phila., LVIII, 466, Maranon; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 444. 
Maranon basin 
356. Hyprouicus copetr Gill 
Hydrolicus copet Gill, 1870, Proe. Acad. Nat. Sci. Phila., XXII, 93; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 444. 
Maranon basin 
Known from the four types collected by Orton. 
