2iJG CHARACIXID^, 



(without caudal) ; the pectoral terminates at a considerable distance 

 from the base of the ventrals. Silvery, with greenish stripes along 

 the series of scales ; fins immaculate. ( Val.) 

 Ilio de la Plata, Rio Parana, Uruguay. 



8. Prochilodus dobulinus. 

 Cuv. ^- Val. xxii. p. 81. 



B. 4. D. 11. A. 12. V. 9. L. lat. 50. 

 Head very broad ; body regularly ovate. Coloration uniform. 

 (Val.) 



Amazons. 



9. Prochilodus brama. 



Cuv. & Val. xxii. p. 82 ; t'unfchi. Aniin. Atni'i: Slid, Potss, p. 62. pi. 31. 

 fig.'2. 



D. 11. A. 12. V. 9. L. lat. 60. 



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

 total length (with the caudal); head two-thirds as broad as long. 

 Coloration uniform. ( Val.) 



10. Prochilodus insignis. 



? Prochilodus insignis, ScJiomb. Fish. Gtiiana, i. p. 261. pi. 30. 

 Procliilodus insiguis, Kner, Denkschr. Wien. Acad. 1859, xvii. p. 147. 



D. 10. A. 10. L. lat. 46. L. transv. ^,. 



The height of the body is contained twice and a half in the total 

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

 The origin of the ventral fin is below the middle of the dorsal. The 

 anterior dorsal rays produced ; the ventral does not extend on to 

 the vent. Dark lines along the joining edges of the series of scales ; 

 caudal fin with a black medial band and with three or four oblique 

 black bands across each lobe ; anal with three similar bands. 



Amazons ; ? Rio Branco. 



a-b. Santarem. From Mr. Bates's Collection. 



11. Prochilodus binotatus. 



Schomhurfjh, Fish. Guiana, i. p. 200. pi. 29 ; Kner, Denkschr. Wien. 

 Acad. 1859, xvii. p. 148. 



D. 11. A. 10. L. lat. 48-50. L. transv. 10/10. 



The height of the body is one-thii-d of the total length (without 

 caudal). A medial black band on the caudal fin, and three or four 

 oblique ones on each of the lobes ; two others on the anal fin. Some- 

 times a black spot on the origin of the lateral line, and another on 

 its termination. 



Ilio Branco, Rio Negro. 



