3 8o 



PATAGONIAN EXPEDITIONS: ZOOLOGY. 



i. Bunocephalus amaurus Eigenmann MS. 



Habitat : British Guiana. 

 A2. Bunocephalus verrucosus (Bloch), 



E. & E., 16. 



Habitat: Amazon, below the Madeira. 



3. Biuwcephaliis dorice Boulenger, 



Boulenger, 1902. 

 Habitat : Paraguay. 



4. Bunocephalus iheringii 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. 

 Ay. Bunocephalus bicolor Steindachner, 



E. & E., 17. 

 Habitat : Amazon and its tributaries 

 from Cudajas to Huallaga. 



A8. Bunocephalus melas Cope, E. & E., 18. 



Habitat: Peruvian Amazon. 

 A9. Bunocephalus knerii Steindachner, 



E. & E., 19. 

 Habitat : Amazons and tributaries from 

 Cudajas to the Andes of Peru and 

 Ecuador. 

 A 10. Bunocephalus aleuropsis Cope, 



E. & E., 19. 

 Habitat : Pebas, Ecuador. 

 11. Bunocephalus chamaizelus Eigenmann 

 MS. 

 Habitat: British Guiana. 



Dysichthys Cope. 



Type : Dysichthys coracoideus Cope. 

 Range : Nauta ; Paraguay. 

 A 1. Dysichthys coracoideus Cope, 



E. & E., 20. 

 Habitat: Nauta. 

 2. Dysichthys australis Eigenmann & Ward, 

 E. & W., 1907, 113. 

 Habitat : Paraguay. 



Subfamily Aspredininve. 



Platystacus Bloch. 



Type : Platystacus cotylephorus Bloch ; 



Cotylephorus Swainson. 

 Range : Surinam. 

 A 1. 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., 23. 

 Habitat: Surinam. 



Aspredo Bleeker. 



Type: Aspredo batrachus (Linnaeus). 

 Range : Guiana to the Araguay. 



1 Vaillant has suggested that batrachus may be 

 identical with sicuephorus, in which case the next 

 species should go by the name of batrachus. 



A i. Aspredo aspredo (Linnaeus), 



E. & E., 23. 

 Platystacus lavis 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 



