78 
Indiana University Studies 
Plate X. 
Figure 1. Lasmolyta fasciata Pearson. Cotype. No. 17355, 20 mm. 
Lagoons, Lake Rogoagua. 
Figure 2. Hyphessobrycon ellisi Pearson. Cotype. No. 17343, 31 mm. 
Espia. 
Figure 3. Megalamphoclus rogoaguae Pearson. Type. No. 17348, 23 
mm. Lagoons, Lake Rogoagua. 
Figure 4. Bryconamericus bolivianus Pearson. Cotype. No. 17349, 38 
mm. Rio Colorado, Lower Bopi. 
Figure 5. Piabina beni Pearson. Cotype. No. 17317, 36 mm. Popoi 
River, Upper Beni. 
