ANNOTATED LIST OF THE SPECIES 257 
Charax tectifer Fowler, 1906 (1907), Proc. Acad. Nat. Sci. Phila., LX VIII, 453; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 444. 
Rio Ambyiacu 
H. 3.5; depth 3; D. II, 9; A. IIT, 42; width of head in its length 2.6; depth of 
head 1.6; snout 4; eye 3.5; maxillary 1.42; interorbital 3.5; mandible 1.66; caudal 
peduncle 3.4. (Fowler). 
In other respects Cope’s types of sanguineus correspond to the description of 
the species, except that Cope’s figure erroneously indicates the origin of the anal 
fin opposite the origin of the dorsal. 
322. CHARAX AMAZONUM (Giinther) 
Anacyrtus (Cynopotamus) amazonum Giinther, 1868, Proc. Zool. Soc. London, 246, two, 10 inches, 
Bartlett coll., Neberos. 
Charax amazonum Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, ITT, 445. 
Xeberos 
Known only from the above types 
323. CHARAX GIBBOSUS (Linnaeus) 
“Charax 53”’ Gronow, 1754, Mus. Ichth., I, 19, pl. i, fig. 4; 
Gronow, 1763, Zoophyl., 124, no. 380. 
Salmo gibbosus Linnaeus, 1758, Syst. Nat., ed. x, I, 311, no. 19; 
Linnaeus, 1766, Syst. Nat., ed. xii, I, 513, Surinam; 
Bloch and Schneider, 1801, Syst. Ichth., 419. 
Epicyrtus gibbosus Miller and Troschel, 1845, Horae Ichth., I, 17, pl. ii, fig. 1; 
Miller and Troschel, 1848, in Schomburgk’s Reisen, III, 635. 
Cynopotamus gibbosus Cuvier and Valenciennes, 1848, Hist. Nat. Poiss., XXII, 321, pl. 645, Esse- 
quibo and Amazon; 
Castelnau, 1855, Anim. Amér. Sud, Poiss., 75, Amazon to Ucayali; 
Garman, 1890, Bull. Essex Inst., XXII, 11, Tabatinga. 
Anacyrtus gibbosus Giinther, 1864, Cat. Fish. Brit. Mus., V, 346, Guianas; 
Eigenmann and Eigenmann, 1891, Proc. U.S. Nat. Mus., XIV, 57; 
Perugia, 1897, Ann. Mus. Genova, (2), XVIII, 26, Rio Beni. 
Charax gibbosus Fowler, 1906 (1907), Proc. Acad. Nat. Sci. Phila., LVIII, 453, Surinam; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 444; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 400; 
Fowler, 1939 (1940), Proc. Acad. Nat. Sci. Phila., XCI, 270, two, 98 and 103 mm., Con- 
tamana. 
Peruvian Amazon to the Guianas 
Genus 123: ROEBOIDES Giinther 
Roeboides Giinther, 1864, Cat. Fish. Brit. Mus., V, 345; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 445; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 398. 
Cynocharax Fowler, 1907, Proc. Acad. Nat. Sci. Phila., LVIII, 457. 
