448 



I'ATAC.ONIAN expeditions: ZOOLOGY. 



\'alcnciennes; Mturodon fcrox Gill; 



Macrodon iutcniicdiiis Gvinther. 

 Habitat: Eastern slope of South 



America from La Plata to Rio Mag- 



dalena and Huallaga. 

 ,V Hoplias )iialabaricus micro f>litlialinus 



Pellegrin. 

 Habitat: French Guiana. 

 4. Hoplias laccrdcc Ribciro, Ribeiro, 1908. 

 Habitat: Ribeira. 



CKVTIIRINUS Gil 



Ophioccphalops Fowler. 



Type : Erythrinus uniUcuiatus Spix. 

 Range: From the La Plata to the Ori- 

 noco, including south-eastern coast- 

 wise streams. 

 Al. Hoplcrythrinus iiniticniatus (Spix). 



Erytliriniis vHtatus Cuxier & Valen- 

 ciennes; Erythrinus cinereiis Gill; 

 Errt/iriiiiis kessleri Steindachner. 



Habitat: La Plata to Gu'iana and Peru; 

 Trinidad. 

 2. Hoplcrythrinus siilvus (Agassix). 



Erythrinus groiiovii Cuvier & Valen- 

 ciennes. 



Habitat: San I'rancisco; Guiana; Ori- 

 noco. 



Erythrinus Gronow. 

 Type: Cyprinus cylindricus Linnasus. 

 Range: Rio Janeiro to Surinam and 

 Peru. 

 A I. Erythrinus erythrinus ( Hloch & Schnei- 

 der). 

 Cyprinus cylindricus Linna}us; Cypri- 

 nus ccphalus Linnaeus; Erythrinus 

 sahnoneus Gronow; Erythrinus brev- 

 icauda Giinther. 

 Habitat: Rio Janeiro to Surinam and 

 Peru. 

 2. Erythrinus longipinnis Giinther. 

 Habitat : Essequibo. 



Family GYMNOTIDvE.' 



Stkrn.archus Bloch & Schneider. 

 Type : Gymnotus albifrons Linnaeus. 

 Range : Paraguay, Parana and San 

 Francisco to the Orinoco. 

 I. Stcrnarchus brasiliensis Reinhardt. 



Habitat: Basin of the Rio San Fran- 

 cisco and the Parana and Paraguay. 

 A2. Sternarchus albifrons (Linnaeus). 



Sternarchus lacepedii Castelnau ; Stern- 

 archus viaximilliani Castelnau. 

 Habitat: Ciuianas, .Amazons and Para- 

 guay. 

 A3. Sternarchus bonapartii Castelnau. 



Habitat: Amazons. 

 A4. Sternarchus niacrolepis .Steindachner. 

 Habitat: Amazon near mouth of Rio 

 Negro; Guiana. 



' For the details concerning this family, see Eigen- 

 mann & Ward, Proc. Wash. Acad Sci., vii, pp. 159-188. 



Sternarchell.v Eigenmann and Ward. 



Type: Stcrnarchus schotti Steindach- 

 ner. 

 Range : Amazons. 

 .\i. Sternarchella schotti (Steindachner). 

 Habitat : Amazons, from the Barra do 

 Rio Negro to Peru. 

 .\2. Sternarchella balcenops (Cope). 

 Habitat: Peruvian Amazon. 



Sternarchogiton Eigenmann & Ward. 



Type : Sternarchus nattereri Steindach- 

 ner. 

 Range: Rio Negro and Orinoco. 

 .\i. Sternarchogiton nattereri (Steindach- 

 ner). 

 Habitat: Barra do Rio Negro. 

 2. Sternarchogiton sachsi (Peters). 

 Habitat: Orinoco. 



