64 
Indiana University Studies 
Plate III. 
Figure 1. Corydoras latus Pearson. Type. No. 17278, 64 mm. Lake 
Rogoagua. 
Figure 2. Plecostomus popoi Pearson. Type. No. 17010, 104 mm. 
Popoi River, Upper Beni. 
Figure 3. Plecostomus popoi Pearson (view of the ventral surface of 
the type). 
