154 Annals of the Carnegie Museum. 



Mylin^e. 



Metynnis mola Eigenmann & Kennedy. 



Metynnis hypsauchen (Miiller & Troschel). 



Myleus asterias (Miiller & Troschel). 

 Myleus levis Eigenmann & McAtee. 



Mylossoma aureus (Agassiz). 



Mylossoma albiscopus (Cope). 



Piaractus brachypomus (Cuvier). 



Characin^e. 



Charax gib bos us (Linnaeus). 



Char ax squamosum Eigenmann & Kennedy. 



Charax calliurus Eigenmann. 



Roestes molossus (Kner). 



Rosboides microlepis (Reinhardt). 



Raboides bonariensis Steindachner. 

 Roeboides prognathus (Boulenger) . 

 Cynopotatnus humeralis (Valenciennes). 



Cynopotamus kneri Steindachner. 

 Cynopotamus magdalenaz ( Steindachner) . 16 



Salmi 'mis brevidens Cuvier. 



ACESTRORHAMPHIN^E. 



Acestrorhynchus ferox (Glinther). 

 Acestrorhamphus hepsetus (Cuvier). 



Cynodontin^e. 



211. A. Raphiodon vulpimis Spix. 



Sternopygid^e. 



212. A. Sternarchus albifrons Linnaeus. 



213. A. Rhamphichthys reinhardti Kaup. 



214. A. Rhamphicthys marmoratus Castlenau. 



215. A. Hypopomus breirirostris Steindachner. 



216. A. S. Sternopygus macrurus (Bloch and Schneider). 



217. A. S. Eigenmannia viresceiis (Valenciennes). 



218. A. S. Gymnotus carapo Linnaeus. 



16 The record of this species for the Paraguay is on the authority of Perugia, 

 probably should be eliminated. 



191. 



* 



192. 



A. 



*93- 



A. 



194. 



-K 



195- 



A. 



196. 



A. 



197. 



A. 



198. 



A. 



199. 



* 



200. 



* 



201. 



A. 



202. 



A. 



203. 



P. 



204. 



% 



205. 



A. 



206. 



A. 



207. 



? 



208. 



A. 



209. 



A. 



210. 



C. 



