308 MEMOIRS OF THE CARNEGIE MUSEUM 



(Pirara). — Kner, "Familie der Characinen," i, 1859, 35 (Irisanga). — Gunther, 



Catalogue, V, 1864, 308 (Essequibo; River Cupai). — Peters, MB. Akad. Wiss. 



Berlin, 1877, 472 (Calabozo). — Steindachner, "Flussfische Sudamerika's," i. 



1879, 7 (Orinoco near Ciudad Bolivar). — Eigenmann and Eigenmann, Proc. 



U. S. Nat. Mus., XIV, 1891, 51.— Fowler, Proc. Acad. Nat, Sci. Phila., 1906, 



328 (Rio Parahyba). — Eigenmann, Repts. Princeton Univ. Exp. Patagonia, 



III, 1910, 427. 

 Leporinus novemfasciatus Agassiz, Selecta Gen. et Spec. Pise. Bras., 1829, 65, 



pi 37. 



Eighteen specimens, 74 to about 335 mm. Crab Falls. (C. M. Cat. No 

 1847a-e; I. U. Cat. No. 12137.) 



Three specimens, 74-140 mm. Rockstone Stelling. (C. M. Cat. No. 1848; 

 I. U. Cat. No. 12138.) 



One specimen, 219 mm. Tumatumari, in the cataract. (C. M. Cat. No. 

 1849.) 



Forty specimens, 68-315 mm. Bartica. (C. M. Cat. No. 1850a-?'; I. U. Cat. 

 No. 12139.) 



One specimen, 52 mm. Konawaruk. (C. M. Cat. No. 2209.) 



Head 4.25; depth 3.75; D. 12; A. 10; scales 6 or 7-41-6; eye 2 in snout, 4.5 

 in head, 2.5 in interorbital in the largest specimen; 1.25 in snout, 3 in head, 1.25 

 in interorbital in the smallest. 



Elongate, the width a little more than half the height. Profile gently arched, 

 with a scarcely perceptible change in the curve over the eye. Preventral area 

 broad, rounded; snout conical, the mouth terminal; four teeth in each side of each 

 jaw. 



Dorsal obliquely rounded, the highest ray 4.5-5 in the length; caudal broad, 

 the upper lobe 3.3-3.5 in the length. Anal very obliquely truncate or falcate, the 

 anterior lobe extending beyond the origin of the caudal; ventrals reaching half- 

 way to middle of anal in adult; pectorals half-way to middle of ventrals or beyond. 



Young with the snout, a band through and over the eye, and another across 

 the opercle and nape, black; five black bands encircling the body, one in front of 

 the dorsal, one below and behind the dorsal, one in front and one behind the anal, 

 and one at the end of the caudal peduncle. The first two split into two bands 

 when a length of 75 mm. is reached, the next two begin to split at a length of 200 

 mm., the components moving apart; in the adult there are ten obscure bars about 

 equally spaced, beginning with the one across the opercle. Upper fins and posterior 

 part of anal dark blue. 



