ANNOTATED LIST OF THE SPECIES 271 
Fifth Division—Hepsetine Group of Subfamilies 
Sarcodacinae Gregory and Conrad, 1938, Zoologica, XXIII, 321, 338. 
Hepsetinae Hubbs, 1939, Copeia, 168, by replacement of Sarcodaces Giinther with Hepsetus Swainson. 
Subfamily: CYNODONTINAE 
Genus 188: RHAPHIODON Agassiz 
Rhaphiodon Agassiz, 1829, Sel. Gen. et Spec. Pise. Bras., 59; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 444. 
Cynodon Steindachner, 1882 (1883), Denksch. KIx. Akad. Wiss. Wien, XLVI, 15. 
Type: Rhaphiodon vulpinus Spix 
Range that of the one species 
Little compressed, large oblique mouth; teeth sharp both Jaws; maxillaries 
long, narrow set with smaller teeth; tongue large, free; branchiostegals four, slender; 
body long, compressed, carinate; pectorals large, ventrals small, anal the broadest. 
352. RHAPHIODON VULPINUM Spix 
Rhaphiodon vulpinus Spix, 1829, Sel. Gen. et Spec. Pisce. Bras., 59; 
Fowler, 1906 (1907), Proce. Acad. Nat. Sci. Phila., LVIII, 467, two, Orton collection; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 444. 
Raphiodon vulpinus Cope, 1878, Proc. Amer. Phil. Soc., XVII, 688. 
Cynodon vulpinus Steindachner, 1882 (1883), Denksch. KK. Akad. Wiss. Wien, XLVI, 15, Rio 
Huallaga, three specimens, 310-390 mm. 
Orinoco basin to that of La Plata 
15726, 4, 240-328 mm., czrca, mouth Rio Pacaya, Allen, September, 1920. 
15727, 1, 305 mm., Rio Huallaga, Yurimaguas, Allen, November, 1920. 
, 1, 180 mm., Lago Cashiboya, Allen, August, 1920. 
Chambira-challhua is a name reported by Steindachner, its significance not 
clear, the first part of the name applying to a species of palm used for fiber, the 
suffix challhua being Quichua for fish. Numbers of specimens believed to belong 
here were taken in gill-nets, but more or less completely mutilated by caymans and 
ptranhas. 
Genus 139: CYNODON Spix 
Cynodon Spix, 1829, Sel. Gen. et Spec. Pisce. Bras., 59, 76; 
Steindachner, 1882 (1883), Denksch. Kix. Akad. Wiss. Wien, XLVI, 15; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, IIT, 444; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 395. 
Type: Cynodon gibbus Spix 
Range that of the type species 
Separable on the great elongation of the anal fin, about 80 rays, much longer 
than the preventral area; pectorals reaching anal, dorsal fin above it; scales cycloid. 
