358 



PATAGONIAN EXPEDITIONS : ZOOLOGY. 



HEMBRYCON 



Known range of the Cetopsinae. 



Known range of the characid genus Hemi- 

 brycon.' (In Trinidad.) 



^LUCIOCHARAX' 



CMEIRODON 



Range of the characid genus Luciocharax. 



Known distribution of the characid genus 

 Cheirodon. The species are small, many of 

 them probably unknown. The only tropical 

 genus represented in Chili. 



To Illustrate the Origin of the Pacific Slope Fauna. 



' It is probable that this is a nascent genus arising in different places from different species of 

 the genus Astyanax or Bryconameriais. 



