VIII. ON THE SPECIES OF SALMINUS. 



By Carl H. Eigenmann. 



The species of the genus Salminus are salmon-like characid fishes 

 found in the Trans-andean region of Colombia and northern Ecuador, 

 in the La Plata basin, and northward into the San Francisco basin, and 

 sparingly in the Amazon and Orinoco basins. The species are very 

 similar to each other. 



Key to the Species of Salminus. 

 a. Scales between the dorsal and lateral line 14-16; lat. 1. 92-98; A. 25-29. 



I. maxillosus Cuv. & Val. 

 aa. Scales between the dorsal and lateral line 11; lat. 1. 77-79; A. 27-30. 



2. hrevidens Cuvier. 

 aaa. Scales between the dorsal and lateral line 10; lat. 1. 66-72; A. 24-26. 



3. hilarii Cuv. & Val. 

 aaaa. Scales between the dorsal and lateral line 12; lat. 1. 73. 



4. affinis Steindachner. 



I. Salminus maxillosus Cuvier and Valenciennes. 



6565 a-c, C. ]\I. 1 19-146 mm. Uruguayana, Feb. 7, 1909. Hase- 

 man. 



6566 G, C. IVI. 185 mm. Salto Avanhandava, Sept. 15, 1908. 

 Haseman. 



6610 a, C. M. 485 mm. Porto Alegre, Jan. 22, 1909. Haseman. 



The localities from which this species has been recorded are: Amazon; 

 La Plata; Missiones; Paraguay; Dock Central; Isla Santiago; Puerto 

 Viejo; Asuncion. 



2. Salminus brevidens Cuvier. 



6559 a, C. M. 257 mm. Joazeiro, Nov. 28, 1907. Haseman. 



6560 a, C. M., about 225 mm. Cidade do Barra, Dec. 6, 1907. 

 Haseman. 



6561 a-c, C. M. 147-197 mm. Penedo, March 20, 1908. Haseman. 

 The localities from which this species has been recorded are the 



Rio San Francisco and the Rio Cipo. 



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