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PATAGONIAN EXPEDITIONS: ZOOLOGY. 



Subfamily CRENUCHIN^E. 



CRENUCHUS Giinther. 



Type: Crenuchus spilurus Giinther. 

 Range that of the single species. 

 Ai. 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^. 



IGUANODECTES Cope. Ai. Iguanodectes tenuis Cope. 



Type: Iguanodectes tenuis Cope. 

 Range that of the single species. 



Habitat : Ambyiacu. 



Subfamily TETRAGONOPTERIN^:. 



HENOCHILUS Carman. 

 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 striatulus Kner.) 

 Ai. 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. 



5. Brycon dentex Giinther. 



Habitat: Western Ecuador to Guate- 

 mala. 

 ( MEGALOBRYCON Giinther.) 



(Type: Megalobrycon cephalus Giin- 

 ther.) 

 6. Brycon microlepis Perugia. 



Habitat: Upper Paraguay Basin. 

 A"j. Brycon cephalus (Giinther). 



Habitat : Peruvian Amazon. 

 A8. Brycon erythropterus (Cppe). 



Habitat : Ambyiacu. 

 9. Brycon ferox Steindachner. 



Habitat: Rio Mucuri. 

 Aio. Brycon melanopterus (Cope). 



Habitat : Amazons, 

 ii. 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 carpophagus (Cuvier & Valen- 



ciennes) . 

 Habitat: Minas Geraes. 



14. Brycon lineatus Steindachner. 



Habitat: La Plata. 

 Ai5. Brycon stiibelli Steindachner. 



Habitat: Amazons. 

 A 1 6. Brycon brevicaudus Giinther. 



Habitat : Amazon Basin. 





