296 CHARACiNrD^a:. 



(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.) 

 Rio 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 brania. 

 Cuv. & Val. xxii. p. 82 ; Casteln. Anim. Atner. Sud, Fbiss. p. 62. pi. 31. 



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 insignia. 



? Prochilodus insignia, Schomb. Fish. Guiana, i. p. 261. pi. 30. 

 Prochilodus insignia, Kner, Denkschr. Wien. Acad. 1859, xvii. p. 147. 



D. 10. A. 10. L. lat. 46. L. transv. Jtg. 



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 ve*nt. 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. 



Schomburgk, Fish. Guiana, i. p. 260. pi. 29 ; Rner, Denkschr, Wien. 

 Acad. i859, xvii. p. 148. 



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



The height of the body is one-third 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. 



Rio Branco, Rio Negro. 



