370 CHAKACINID^:. 



8. Serrasalmo margiaatus. 



Valenc. in _D' Orb. Voy. Amer. Merid. Poiss. pi. 10. fig. 1 ; C'uv. 8f Val. 

 xxii. p. 277 ; Kner, Denkschr. Acad. Wiss. Wien, 1860, xviii. p. 40. 



D. 17. A. 34-36. V. 7. 



Tvhe height of the body is contained once and three-fourths in the 

 total length (without caudal), the length of the head thrice ; snout 

 rather pointed. The second infraorbital is separated from the prae- 

 opercular limb by a narrow strip of naked skin. Abdominal serra- 

 ture composed of from twenty-six to thirty-two spinous plates. 

 Caudal fin without black margin ; anal black-edged. 



Brazil. 



9. Serrasalmo spilopleura. 



? Serrasalmo aureus, Spix, Pise. Brasil. p. 72. tab. 29 ; Cur. 8f Val. xxii. 



p. 282 ; Kner, Denkschr. Acad. Wiss. Wien, 1860, xviii. p. 43. 

 Serrasalmo spilopleura, Kner, I. c. taf. 5. fig. 11. 



D. 16. A. 33. V. 7. L. lat. 95. 



The height of the body is contained once and two-thirds in the 

 total length (without caudal), the length of the head thrice and one- 

 third ; snout obtuse, much longer than the eye. The second infra- 

 orbital is subtriangular, nearly as high as long, and separated from 

 the praeopercular limb by a narrow strip of skin. Abdominal ser- 

 rature composed of from thirty-two to thirty-three spinous plates. 

 Gill-rakers of the outer branchial arch short. An indistinct blackish 

 blotch behind the gill-opening ; caudal fin with a black transverse 

 marginal band and with a whitish hinder edge. 



Brazil. 



a. Adidt. From the Haslar Collection. 



6. Young. River Capin. Purchased of Mr. Stevens. 



10. Serrasalmo humeralis. 



Cur. 4" Val. xxii. p. 279; Kner, Denkschr. Acad. Wiss. Wien, 1860, 

 xv^i. d. 38 taf. 4. fig. 9. 



D. 16. A. 33-34. V. 7. 



The height of the body is contained once and five-sixths in the 

 total length (without caudal), the length of the head thrice. The 

 second infraorbital is considerably longer than high, and separated 

 from the praeopercular limb by a strip of naked skin. Abdominal 

 serraturo composed of from twenty-six to twenty-eight spinous plates. 

 Body with round blackish spots ; a large blackish blotch behind the 

 gill-opening ; caudal with the margin black. 



Brazil. 



