N0.1JS2. ARaENTlNA FISHES—EVERMANN AND KENDALL. 81 



Our 2 specimens present the following characteristics: Total length 

 in inches, 1.S7 and 1.68; head, 4.44 and 4.35 in length without caudal; 

 depth 5 and 4.11; 3.6 and 4.25 e^^e in head; snout 3 and 3.4; scales 

 6-39-4 and 5-39-5; D. 11 and 10;"^ A. 8; P. 15. 



Color, after preservation first in formalin and later in alcohol, 

 ])rownish olive; from 7 to 9 large dark spots along side of back and 

 about 17 or 18 upright oblong dark spots along side, coalescing more 

 or less on lateral line, making a sort of irregular lateral stripe; belly- 

 pale; fins all pale, 



17. ASTYANAX FASCIATUS " (Cuvier). 



Tetrngonopierui<fasciatuii Cuvier, Mem. Mus. Hist. Nat., V, 1819, p. 352, pi. xxvi, 

 fig. 2, rivers of Brazil. — Eigenmann and Bray, Ann. N. Y. Ac. Sci.,VII, 

 1892, pp. 94, 634. 



In our collection from Rio Primero, Cordoba, there are examples 

 from about 1.65 to 3.12 inches in total length. In the majority of 

 individuals, after preservation in formalin, there is a narrow lateral 

 plumbeous, black stripe widening toward the tail, where it becomes a 

 large black spot, from which the black extends upon the middle rays 

 of caudal; a vertically oblong spot on shoulder, in some instances 

 extending nearly to pectoral. The dorsal and anal are sometimes 

 tipped with dusky; dorsal origin a little behind insertion of ventrals; 

 pectoral reaching quite to ventral and ventral nearly or quite to anal; 

 a silvery lateral stripe which is indistinct in some lights and very dis- 

 tinct in others; no shoulder spot evident; a very faint duskiness indi- 

 cates a caudal spot; flap of skin on base of each dorsal ray mentioned 

 by Jen3ms in T. rutihis^ white. 



Proportional measxirements of Astyanax fasciatus. 



« According to a recent note from Dr. Eigenmann, he is of the opinion that 2 species 

 are represented among the specimens here identified as A. fasciatu.^ — one being this 

 species, the otlier unrecognized. We are unable to discover any specific differences. 



