82 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXI. 



i8. ASTYANAX RUTILUS (Jenyns), 



Tetragonopterus i-utilus Jenyns, Zool. Voy. Beagle, Fish, 1842, p. 125, pi. xxiii, 

 fig. 2, Rio Parana. — P^igenmann and P^igenmann, Proc. U.S. Nat. Mas., 1891 

 (1892), p. 52 (Cauca; Canelos; Ecuador; Rio San Francisco to Rio Plata 

 [Xamapa, Mexico]). 



The present collection contains 3 specimens, the definite locality of 

 which is unknown. 



Proj}ortional measurements of Astyanax rutilus. 



ig. ASTYANAX CORDOViE (Gunther). 

 MOJARRA. 



Tetragonopterus corfZor.-)? Gitnther, Ann. Mag. Nat. Hist., YI (5th ser. ), 1880, p. 

 21, Rio de Cordoba. 



There are 13 specimens in the present collection from Rio Primero, 

 Province of Cordoba, 10 of them presenting the following- proportional 

 measurements, scale and fin-ra}^ counts: 



Proportional measurements of Astyanax cordovx. 



Origin of dorsal over insertion of ventral; ventral reaching vent; 

 pectoral not reaching ventral. 



20. ASTYANAX IHERINGII (Boulenger). 



TetragonojAerus iheringii Boulenger, Ann. Mag. Nat. Hist., XIX, 5th ser., 1887, 

 p. 172, San Lorenzo, Rio Grande do Sul. 



Three specimens in the present collection measuring about 2.44 to 3 

 inches in total length; probably came from Rio Primero, Cordoba. 



