79 



SINGLE-SPOTTED SALMON. 



Salmo Unimaciilatus. S. argenteo-ccemlescens, macula ufrmquc 



nigra, cauda elongata furcafa, 

 Silvery-blueish Salmon, with a black spot on each side the 



body, and lengthened forked tail. 

 Salmo unimaculatus. S. maxilla superiore suhlongiore, macula 



nigra ad lineam laterakm. Block, t. 381./. 3, 

 Curimata Brasiliensibus. Marcgr. Pise. Will. S^c. 



Length about eighteen inches : colour silvery, 

 with an olive or dusky tinge on the back: fins pale: 

 tail rather long, and very deeply forked : scales 

 rather large than small : on each side the middle of 

 the body a moderately large round black spot : 

 snout obtuse : upper jaw rather longer than the 

 lower. Native of the lakes and other fresh waters 

 of South- America : considered as a very delicate 

 fish by the inhabitants of Brasil, Surinam, &:c. 



black-tailed salmon. 



Salmo Melanums. S. urgenteo-cczrulescejis, squamis magnis, 



pinnis flavis, cauda furcata medio nigra, 

 Silvery-blueish Salmon, with large scales, yellow fins, and 



forked tail black in the middle. 

 Salmo melanurus. S. radiis triginta in pinna annali, maculaque 



nigra in caudali. Block, t. 381. f. 2. 



Length of the specimen described by Blocli 

 about four inches : colour silvery, with a blueisli 

 cast ; the back brown : snout obtuse, with the 

 lower jaw rather longer than the upper : scales 



