ElGENMANN : COLLECTION OF FlSHES FROM PARAGUAY. 153 



165. * Astyanax moorii (Boulenger). 



166. A. Astyanax bimaculatus (Linnaeus). 



167. * Astyanax bimaculatus /meatus (Holmberg). 



168. A. B. Astyanax rutilus (Jenyns). 



169. * Astyanax moenkhausi Eigenmann & Kennedy. 



170. A. Moenkhausia agassizi (Steindachner). 



171. * Moenkhausia dichrourus (Kner). 



172. A. Moenkhausia lepidurus (Kner). 



173. ** Bryconamericus exodon Eigenmann. 



174. B. Brachy chalcinus re trospina Boulenger. 15 



175. * Brycon hilari (Cuvier & Valenciennes). 



176. * Brycon microlepis Perugia. 



177. A. Creatochanus melanurus (Bloch). 



178. P. Bryconodon orbignianus (Cuvier & Valenciennes). 



GASTEROPELICINiE. 



179. A. Thoracocharax stellatus (Kner). 



180. * Chalcinus paranensis Giinther. 



181. A. Chalcinus angulatus Spix. 



182. Chalcinus angulatus curtus Garman. 



Serrasalmoni^e. 



S. Pygocentrus piraya (Cuvier). 



Pygocentrus nattereri (Kner). 



Pygopristis serrulatus Cuvier & Valenciennes. 

 S. Serrasalmo marginatus Valenciennes. 



Serrasahno spilopleura Kner. 



Serrasalmo gymnogenys Gunther. 



Serrasalmo humeralis Cuvier & Valenciennes. 



Serrasalmo rhombeus (Linnaeus). 



15 Fowlerina paraguayensis Eigenmann should be added here. Foi.vlerina is a 

 new genus for Tetragonopterus compressus Gunther. It is allied to Brachychalcinus 

 and Stelhaprion, differing from the former by having a leaf-like or scale-like pre- 

 dorsal spine, and from the latter in having less than 40 scales in the lateral line. 

 Tetragonopterus compressus has anal II, 31^. The Paraguayan specimens in the 

 British Museum have : 



2 specimens from Santa Cruz. A. II, 34^. 



3 specimens from San Luis. A. Ill, 34^2. 



5 specimens from Descalvados. A. II, 35 ; I, 36^, and III, 34^. 

 These having uniformly a larger number of anal rays may be termed Fozvlerina 

 paraguayensis. 



183. 



A. 



184. 



A. 



185. 



A. 



186. 



A. 



187. 



A. 



188. 



A. 



189. 



A. 



190. 



A. 



