44 8 



PATAGONIAN EXPEDITIONS: ZOOLOGY. 



Valenciennes; Macrodon jerox Gill; 

 Macrodon intermedins Gunther. 

 Habitat: Eastern slope of South 

 America from La Plata to Rio Mag- 

 dalena and Huallaga. 



3. Hoplias malabaricus microphthalmos 



Pellegrin. 

 Habitat: French Guiana. 



4. Hoplias lacerdce Ribeiro, Ribeiro, 1908. 



Habitat: Ribeira. 



HOPLERYTHRINUS Gill. 



Ophioccphalops Fowler. 



Type : Erythrinus unitaniatus Spix. 

 Range: From the La Plata to the Ori- 

 noco, including south-eastern coast- 

 wise streams. 

 Al. Hoplerythrinus unitaniatus (Spix). 



Erythrinus vittatus Cuvier & Valen- 

 ciennes; Erythrinus cinereus Gill; 

 Erythrinus kessleri Steindachner. 



Habitat: La Plata to Guiana and Peru; 

 Trinidad. 

 2. Hoplerythrinus salvus (Agassix). 



Erythrinus gronovii Cuvier & Valen- 

 ciennes. 



Habitat: San Francisco; Guiana; Ori- 

 noco. 



Erythrinus Gronow. 



Type : Cypriuus cylindricus Linnaeus. 



Range: Rio Janeiro to Surinam and 

 Peru. 

 A 1. Erythrinus erythrinus (Bloch & Schnei- 

 der). 



Cyprinus cylindricus Linnaeus ; Cypri- 

 uus cephalus Linnaeus; Erythrinus 

 salmoneus Gronow ; Erythrinus brev- 

 icauda Gunther. 



Habitat: Rio Janeiro to Surinam and 

 Peru. 

 2. Erythrinus longipinnis Gunther. 



Habitat : Essequibo. 



Family GYMNOTID/E. 1 



Sternarchus Bloch & Schneider. 



Type : Gymnotus albifrons Linnaeus. 

 Range : Paraguay, Parana and San 

 Francisco to the Orinoco. 

 1. Sternarchus brasiliensis Reinhardt. 



Habitat: Basin of the Rio San Fran- 

 cisco and the Parana and Paraguay. 

 A2. Sternarchus albifrons (Linnaeus). 



Sternarchus lacepedii Castelnau ; Stern- 

 archus maximilliani Castelnau. 

 Habitat : Guianas, Amazons and Para- 

 guay. 

 A3. Sternarchus bonapartii Castelnau. 



Habitat : Amazons. 

 A4. Sternarchus macrolepis Steindachner. 

 Habitat: Amazon near mouth of Rio 

 Negro ; Guiana. 



1 For the details concerning this family, see Eigen» 

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



Sternarchella Eigenmann and Ward. 



Type : Sternarchus schotti Steindach- 

 ner. 

 Range : Amazons. 

 Al. Sternarchella schotti (Steindachner). 

 Habitat : Amazons, from the Barra do 

 Rio Negro to Peru. 

 A2. Sternarchella balccnops (Cope). 

 Habitat : Peruvian Amazon. 



Sternarchogiton Eigenmann & Ward. 



Type : Sternarchus nattereri Steindach- 

 ner. 

 Range: Rio Negro and Orinoco. 

 A 1. Sternarchogiton nattereri (Steindach- 

 ner). 

 Habitat: Barra do Rio Negro. 

 2. Sternarchogiton sachsi (Peters). 

 Habitat: Orinoco. 



