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PATAGONIAN EXPEDITIONS: ZOOLOGY. 



HEMIBRYCON Gunther. 



Type : Hemibrycon polyodon Giinther. 

 Range: Peru; Ecuador; Trinidad. 



1. Hemibrycon guppii (Regan). 



Habitat: Trinidad. 



2. Hemibrycon tceniurus (Gill). 



Habitat: Trinidad. 

 A3. Hemibrycon jelskii (Steindachner). 



Habitat: Peru. 

 4. Hemibrycon polyodon Giinther. 



Hemibrycon huambonicus (Steindach- 

 ner). 



Habitat : Western Ecuador and Peru. 

 A5- Hemibrycon ipanguianus (Cope). 



Habitat: Ucayale. 



PSEUDOCHALCEUS Kner. 



Type: Pseudochalceus lineatus Kner. 

 Range : Western Ecuador and Rio 



Grande do Sul. 

 i. Pseudochalceus lineatus Kner. 



Habitat : Western slopes of Ecuador. 



HOLLANDICHTHYS Eigenmann. 



Type : Tetragonopterus multifasciatus 



E. &N. 



i. Hollandichthys multifasciatus (Eigen- 

 mann & Norris). 



Pseudochalceus perstriatus Ribeiro ; 

 Pseudochalceus affinis Steindachner. 



Habitat : Cubatao. 



ASTYANAX Baird & Girard. 



Pcecilurichthys Gill. 



Type: Astyanax argentaius Baird & 



Girard. 



Range : All streams of the eastern slope 

 of South America north of Buenos 

 Aires. Pacific slope of Central 

 America and Mexico. 



(PCECILURICHTHYS Gill). 



(Type: P. brevoortii Gill), 

 i. Astyanax poly le pis (Giinther). 



Habitat: Guiana. 



2. A styanax erythropterus (Holmberg). 



Habitat: La Plata Basin. 



3. Astyanax pellegrini Eigenmann. 



Habitat : Paraguay. 



4. Astyanax correntinus (Holmberg). 



Habitat: Parana. 

 A5. 'Astyanax riveti Pellegrin. 



Habitat : Rio Pove, Ecuador. 

 6. Astyanax festae (Boulenger). 



Habitat : Western Ecuador. 

 A7. Astyanax brevirostris (Gunther). 



Tetragonopterus branckii Steindachner. 

 Habitat : Ecuador and Peru. 

 A8. Astyanax asymmetricus Eigenmann. 



Habitat: Tabatinga. 

 Ag. Astyanax symmetricus Eigenmann. 



Habitat : Tabatinga. 

 Aio. Astyanax zonatus Eigenmann. 



Habitat: Tabatinga. 

 ii. Astyanax cordovce (Gunther). 



Habitat: Argentina. 

 A 1 2. Astyanax anterior Eigenmann. 



Habitat : Tabatinga. 

 A 1 3. Astyanax bourgeti Eigenmann. 



Habitat: Tabatinga. 

 14. Astyanax abramoides Eigenmann. 



Habitat : Guiana. 

 Ai5_ Astyanax abramis (Jenyns). 

 Habitat: Orinoco to La Plata. 

 Al6. Astyanax bimaculatus (Linnaeus). 



Albula maculata Linnaeus; Tetragonop- 

 terus linncei, orbignianus, gronovii 

 Cuvier & Valenciennes; Pacilur- 

 ichthys brevoortii Gill; T. bart- 

 lettii Gunther ; T. orientalis Cope ; T. 

 microstoma Hensel ; T. obscurus 

 Hensel ; T. caudimaculatus Cope, and 

 ? jacuhiensis Cope. 



Habitat: All streams from the Rio 

 Bayano south to the La Plata and 

 east of the Andes. 



17. Astyanax bimaculatus borealis Eigen- 

 mann 

 Habitat: Magdalena Basin. 



