VERTICAL DISTRIBUTION OF FISHES IN THE BENI 
Family Aspredinidae 
Runocephalus bifid us 
Family Siluridae 
Subfamily Pimelodinae 
Pteroglanis manni 
Pseudopimelodus zungaro 
Cetopsorhamdia nasus 
Rhamdia quelen 
Rhamdia micayi 
Nannorhamdia guttatus 
Imparfinis bolivianus 
Rhamdella rusbyi 
Pimelodus clarias 
Pimelodella buckleyi 
Pimelodella gracilis 
Pimelodella roccae 
Pimelodella griffini 
Pimelodella Iaticeps australis. 
Sorubim lima 
Cheirocerus eques 
Subfamily Auchenipterinae 
Trachelyopterus coriaceus 
Trachycorystes galeatus 
Trachycorystes ceratophysus . . 
Auchenipterus nuchalis 
Family Doradidae 
Platydoras costatus 
Amblydoras hancockii 
Family Astroblepidae 
Astroblepus longiceps 
Family Cetopsidae 
Cetopsis candiru 
Cetopsis plumbeus 
Family Pygidiidae 
Pygidium rivulatum 
Pygidium barbouri 
Pygidium eichorniarum 
Urinophilus erythrurus 
Tridens brevis 
2500— 
3500 ft. 
