122 CALIFORNIA ACADEMY OF SCIENCES. 



IV. LUCIOPIMELODUS geil. HOT. 

 Type, Pimelodus pati Valenciennes. 

 First dorsal and pectoral rays not spinous, flexible and 

 longer than any of tlie succeeding rays. Free margins of 

 the dorsal and anal emarginate. Barbels scarcely mar- 

 gined. Head depressed; snout elongate spatulate. Font- 

 anel continued to the base of the occipital process. Oc- 

 cipital process a mere ridge. 



5. Luciopimelodus pati (Valenciennes). 



Locality: Bnenos Ayres. 



6. Luciopimelodus platanus (Giiuthei). 



Y. PsEUDOPiMELODUS Bleeker. 

 Zungaro Bleeker; Batrachoglanis Gill; Lophiosilurus Stein- 

 dachner. 



§ Lophiosilurus. 



7. Pseudopimelodus alexandri Steindachner. 



Pseudophneloclus agassizii. Steindachuer. 



§ BatracJioglanis. 



8. Pseudopimelodus parahybae steindachner. 



Pseudopimelodus charus Steindachner (not C. & V.) 

 Locality: Santa Cruz. 



9. Pseudopimelodus raninus (Cuv. & Val.) 



10. Pseudopimelodus pulcher Boulenger. 



§ Pseudopimelodus. 



11. Pseudopimelodus zungaro (Humboldt.) 



Pimelodus bufonhis, charus and mangurus Cuv. & Val.; Zungaro hum- 



holdtii Bleeker. 

 Locality: Goyaz. 



12. Pseudopimelodus acanthochirus sp. nov. 



Type, No. 8133, one specimen, .063 m. Gurupa. 

 Type, No. 8157, one specimen, .045 m. Tajapuru. 

 Type, No. 7732, two specimens, .093— .114 m. TeSf^. 

 Collected by Professor Louis Agassiz. 

 Type, No. 7.332, one specimen, .12 m. Jutahy. 



