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PATAGONIAN EXPEDITIONS! ZOOLOGY. 



Subfamily Crenuchin^e. 



Crenuchus Giinther. 



Type: Crenuchus spilurus Giinther. 

 Range that of the single species. 

 A i. Crenuchus spilurus Giinther. 



Habitat : Amazons and Guiana. 



Pcecilocharax Eigenmann. 



Type : Pcecilocharax bovallii Eigen- 

 mann. 

 Range that of the single species. 

 I. Pcecilocharax bovallii Eigenmann. 

 Habitat : Kaieteur, Potaro River. 



Subfamily Iguanodectin.e. 



Iguanodectes Cope. Ai. I guanodectes tenuis Cope. 



Type : Iguanodectes tenuis Cope. 

 Range that of the single species. 



Habitat : Ambyiacu. 



Subfamily Tetragonopterin^e. 



Henochilus Garman. 

 Type: Henochilus wheatlandi Garman. 

 Range that of the single species. 



1. Henochilus wheatlandi Garman. 



Habitat: Southeastern Brazil. 



Brycon Miiller & Troschel. 

 Bryconodon Eigenmann. Triurobrycon 

 Eigenmann. 

 Type : Brycon falcatus Miiller & Tro- 

 schel. 

 Range : La Plata to Guatemala in all 

 streams ; western Peru, Ecuador and 

 Panama. 

 (Chalcinopsis Kner.) 



(Type: Chalcinopsis strialulus Kner.) 

 A I. Brycon striatulus (Kner). 



Chalcinopsis chagrensis Kner. 

 Habitat: Ecuador to Panama. 



2. Brycon guatemalensis Regan. 



Habitat : Central America. 



3. Brycon rubricauda Steindachner. 



Habitat : Cauca. 



4. Brycon alburnus (Giinther). 



Habitat : Western Ecuador. 

 Brycon dentex Giinther. 



Habitat: Western Ecuador to Guate- 

 mala. 

 ( Megalobrycon Giinther.) 



5 



(Type: Megalobrycon cephalus Giin- 

 ther.) 

 6. Brycon microlepis Perugia. 



Habitat : Upper Paraguay Basin. 

 A7. Brycon cephalus (Giinther). 



Habitat: Peruvian Amazon. 

 A8. Brycon crythropterus (Cope). 



Habitat : Ambyiacu. 

 9. Brycon ferox Steindachner. 



Habitat: Rio Mucuri. 

 A 10. Brycon melanopterus (Cope). 



Habitat : Amazons. 

 11. Brycon devillei (Castelnau). 



Brycon insignis Steindachner. 



Habitat : Southeastern Brazil. 



(Brycon Miiller & Troschel.) 

 A 1 2. Brycon hilarii (Cuvier & Valen- 

 ciennes) . 



Habitat : Salinas ; Paraguay ; Rio San 

 Francisco; Amazon. 



13. Brycon carpopliagus (Cuvier & Valen- 



ciennes). 

 Habitat: Minas Geraes. 



14. Brycon lineatus Steindachner. 



Habitat: La Plata. 

 A15. Brycon stiibelli Steindachner. 



Habitat : Amazons. 

 A 1 6. Brycon brevicaudus Giinther. 



Habitat : Amazon Basin. 



