Pearson: Fishes of the Rio Beni Basin 
49 
Charax squamosus Eigenmann & Kennedy. 
17161, 1, 148 mm., Rurrenabaque. Oct., 1921. 
17220, 2, 183 and 230 mm., Huachi. Aug., 1921. 
Roeboides af finis (Gunther). 
17126, 10, 75-110 mm., Rurrenabaque. Oct., 1921. 
17127, 5, 60-140 mm., Popoi River, Upper Beni. Sept., 1921. 
Cynopotamus kneri (Steindachner) . 
17128, 1, 180 mm., Huachi. Aug., 1921. 
17129, 5, 110-160 mm., Rurrenabaque. Oct., 1921. 
Salminus hilarii C. & V. 
17229, 2, 195 and 330 mm., Ixiamas. Dec., 1921. 
The species of this genus are not yet definitely delimitated. 
It seems that there have been many mistaken identifications 
in previous records, and the identification of the present speci- 
mens may be mistaken. The counts for the two specimens 
are: A. 25 and 25, scales 13-75-8 and 13-76-9. 
Subfamily acestrorhamphin.e. 
Acestrorhynchus falcatus (Bloch). 
17123, 6, 185-230 mm., Lake Rogoagua. Oct., 1921. 
17124, 12, 75-112 mm., Cachuela Esperanza. Mar., 1922. 
Subfamily ERYTHRININJE. 
Hoplias malabaricus (Bloch). 
17107, 16, 37-210 mm., Huachi. Aug., 1921. 
17108, 5, 190-262 mm., Lagoons, Lake Rogoagua. Nov., 1921. 
17109, 34, 30-217 mm., Lagoons near Reyes. Oct., 1921. 
17110, 2, 235-242 mm., Pena Colorado, Upper Beni. Sept., 1921. 
17111, 4, 70-180 mm., Cachuela Esperanza. Mar., 1922. 
17112, 1, 47 mm., Rio Iniqui, Upper Beni. Sept., 1921. 
Hoplerythrinus unitseniatus (Spix). 
17105, 4, 205-278 mm., Lagoons, Lake Rogoagua. Nov., 1921. 
17106, 6, 125-258 mm., Cachuela Esperanza. Mar., 1922. 
17122, 17, 24-54 mm., Lagoons, Lake Rogogua. Oct., 1921. 
