ANNOTATED LIST OF THE SPECIES 259 
326a. ROEBOIDES SP. 
15806, 15807, , , Lago Sanango, Allen, November, 1920. 
Genus 124: Cynoporamus Cuvier and Valenciennes 
Cynopotamus Cuvier and Valenciennes, 1848, Hist. Nat. Poiss., X XII, 317; 
Fowler, 1939 (1940), Proc. Acad. Nat. Sci. Phila., XCI, 268. 
Eucynopotamus Fowler, 1904, Proc. Acad. Nat. Sei. Phila., LITT, 119; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, IIT, 445. 
Type: Hydrocyon argenteus Valenciennes 
Rio Magdalena to Peruvian Amazon and La Plata 
Placed by Fowler with Hydrolicus in the subfamily Cynodontinae. 
Teeth of lower jaw in a single series, having four canines in front (the third the 
largest) and numerous small teeth along the sides; premaxillary teeth in two series, 
a canine at each end; maxillary without canines; lateral line complete; scales very 
small (90 or more on the lateral line series); no opercular spine; clavicle slightly 
notched, lower edge not blade-like, without spines. 
327. CYNOPOTAMUS GULO Cope 
Cynopotamus gulo Cope, 1870, Proc. Amer. Phil. Soc., XI, 565, Pebas, Hauxwell collection; 
Fowler, 1939 (1940), Proc. Acad. Nat. Sci. Phila., XCI, 268, four, 128-164 mm., Contamana. 
Cynopotamus (Hucynopotamus) gulo Fowler, 1904, Proc. Acad. Nat. Sci. Phila., LITT, 119; 
Fowler, 1906 (1907), Proc. Acad. Nat. Sei. Phila., LVIII, 459, fig. 48. 
Eucynopotamus gulo Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 445; 
Pearson, 1937a, Proc. Cal. Acad. Sei., (4), XXIII, 92, Tingo de Pauca and Pusoc, upper 
Maranon. 
Maranon basin 
328. CYNOPOTAMUS KNERII (Steindachner) 
Anacyrtus knerti Steindachner, 1879, Denksch. Kix. Akad. Wiss. Wien, XX XIX, 65, Canelos; 
Boulenger, 1887, Proc. Zool. Soc. London, 282. 
Eucynopotamus knerta Fowler, 1904, Proc. Acad. Nat. Sci. Phila., LIII, 119; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 445. 
Peruvian Amazon to La Plata 
———, 1, 167 mm., Rio Itaya, Iquitos, Allen, September, 1920. 
The members of the present subfamily and the preceding are known to the 
inhabitants of eastern Peru in a general sense as the peje perro, or ‘“‘dog fish”. They 
have the reputation of being very rapacious, and destructive to fishing gear. 
Subfamily: SALMININAE 
Genus 125: SALMINUS Agassiz 
Salminus Agassiz, 1829, Sel. Gen. et Spec. Pisc. Bras., 18; 
Higenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 446; 
Eigenmann, 1922, Mem. Carnegie Mus., [X, 158. 
