3 8o 



PATAGONIAN EXPEDITIONS: 'ZOOLOGY. 



I. Bunocephalus amaurus Eigenmann MS. 



Habitat: British Guiana. 

 Aa. Bunocephalus verrucosus (Bloch), 



E. & E., 1 6. 



Habitat: Amazon, below the Madeira. 



3. Bunocephalus dorice Boulenger, 



Boulenger, 1902. 

 Habitat : Paraguay. 



4. Bunocephalus ihcringii Boulenger, 



Boulenger, 1891, 235. 

 Habitat: Rio Grande do Sul and 

 Paraguay. 



5. Bunocephalus rugosus Eigenmann & 



Kennedy, 1903, 498. 



Habitat : Paraguay. 

 A6. Bunocephalus gronovii Bleeker, 



E. & E., 17. 

 Habitat: Mouth of Rio Negro and De- 



marara. 

 A7. Bunocephalus bicolor Steindachner, 



E. & E., 17. 



Habitat: Amazon and its tributaries 

 from Cudajas to Huallaga. 



Subfamily 



PLATYSTACUS Bloch. 



Type : Platystacus cotylephorus Bloch ; 



Cotylephorus Swainson. 

 Range: Surinam. 

 A I. Platystacus cotylephorus Bloch, 



E. & E., 21. 



Silurus hexadactylus Lacepede; As- 

 predo sexcirrhis Cuvier & Valencien- 

 nes; Aspredo spectrum Gronow. 

 Habitat : Surinam and Rio Para. 

 2. Platystacus nematophorus Bleeker, 



E. & E., 2*3. 

 Habitat: Surinam. 



ASPREDO Bleeker. 



Type: Aspredo batrachus (Linnaeus). 

 Range : Guiana to the Araguay. 



'Vaillant has suggested that batrachus may be 

 identical with sicuephorus, in which case the next 

 species should go by the name of batrachus. 



A8. Bunocephalus melas Cope, E. & E., 1 8. 



Habitat : Peruvian Amazon. 

 Ag. Bunocephalus knerii Steindachner, 



E. & E., 19. 



Habitat : Amazons and tributaries from 

 Cudajas to the Andes of Peru and 

 Ecuador. 

 AID. Bunocephalus aleuropsis Cope, 



E. & E., 19. 



Habitat : Pebas, Ecuador. 

 II. Bunocephalus chamaizelus Eigenmann 



MS. 

 Habitat: British Guiana. 



DYSICHTHYS Cope. 



Type : Dysichthys coracoideus Cope. 

 Range: Nauta; Paraguay. 

 Ai. Dysichthys coracoideus Cope, 



E. & E., 20. 

 Habitat : Nauta. 



2. Dysichthys australis Eigenmann & Ward, 

 E. & W., 1907, 1 13. 

 Habitat : Paraguay. 



A i. Aspredo aspredo (Linnaeus), 



E. & E., 23. 



Platystacus Iccvis Bloch; Aspredo ba- 

 trachus (Linnaeus). 1 

 Habitat: Guiana; Rio Para and Arary. 

 2. Aspredo sicuephorus Cuvier & Valen- 

 ciennes, E. & E., 24. 



Habitat: French and British Guiana. 



CHAMAIGENES Eigenmann. 



Type: Aspredo filamentosus C. & V. 

 Range that of the single species. 

 I . Chamaigenes filamentosus ( Cuvier & Val- 

 enciennes), E. & E., 24. 



Habitat : Guianas. 



ASPREDINICHTHYS Bleeker. 

 Type: Aspredo tibicen Temmink. 

 Range that of the single species 



