296 The South American Characinidse 



147. Xipliystoiiia ocellatuiii Scliomburgk. 



Fisli. Guiana, I., 145, tab. '23, 1841 (Esseqnibo, Eio. Negro and 

 Bianco); Cuv. & Val., XXII., 3.5.5; Kner, Denkschr. Acad. Wiss. Wien, 

 XVIII., 61, taf. 8, fig. 18 (head) 18.58 (Eio Bianco and Eio Soliinoco); Giin- 

 tlier, Cat. Fish. Brit. ]Mus., V., 357, 1864 ; Eigenni. & Eigenm., Proc. U. S. 

 Nat. Mus., XIV., 59, 1891. 



One specimen from Brazil. 



148. Cyiiodoit §;il>l>iis Spix. 



Pise. Bras. tab. 27, 1829 ; Cuv. & Val., XXIL, 333, 1848 ; Castelnau, Anini. 

 Aiiier. Slid., 75, 1855 (Amazon): Kner, Denkschr. Acad. Wiss. AVieii, XVIII. , 

 54, 1858 : Giinther, Cat. Fish. Brit. Mus., V., 359, 1864 ; Eigenm. & Eigenm., 

 Proc. U. S. Xat. Mus., XIV., 59, 1891. 



Baphiodon (jihlms Agassiz in Spix, Pise. Bras, p. 77, 1829. 



Trocera on Tocantins (one specimen); Brazil (one specimen). 



SERRASALMONINiE. 



149. Mylesiiiiis luacropteiis sp. nov. 



Body deep, If in the length ^vithout the caudal ; head 3^ (including the 

 chin in each case). Abdominal serrations 11 behind the ventrals, the posterior 

 4 ill pairs, 22-25 smaller ones before the ventrals. Muzzle once and two- 

 thirds iu the orbit which equals the interobital space. D I. 16, A. 36, V. 7. 

 Scales small, aljoiit 83. Tlie lateral line rather deeply curved below the ori- 

 gin of the dorsal. Height of the dorsal fin 2S times its length ; the second and 

 third rays greatly elongate, the fourth ray about half as long, j^nal not 

 lobed. Tlie second and third rays about as long as the base of the fin ; the 

 sixth ray about one-fourth as long as the second and third. Tlie ventrals 

 reach the anal, the pectorals nearh^ to the ventrals. Origin of the dorsal a lit- 

 tle nearer the tiji of the snout than the base of the caudal. Ventrals beneath 

 the middle of the dorsal. 



Snout little more than half as long as the diameter of the eye, the interor- 

 bital space a little more than tlie diameter of the eye. Lower jaw greatly 

 projecting. Teeth in the mandibles in one series, notched and wide ajjart. 

 Intermaxillaries with two rows of teeth close together, those of the outer row 

 far apart, the inner ones opposite the spaces between two of the outer row. 



Habitat: — Brazil. (Two specimens 9 cm. long.) 



150. Pygopristis deiiticiilatiis (Cu\aer). 



Serrasalmo dcntmilafiis Cuv., Mem. Mus., V., 371; Giinther, Cat. Fish. 

 Brit. Mus., v., 367, 1864 (British Guiana). 



Serrasalmo pioicfiiliiN i^chonih., Fish. Guiana, I., 223, taf. 17, 1841. 



ruyoprisHs d< uticiihitHs Miill. & Trosch., Hor. Ichth. I., 21, tab. 9, fig. 1, 

 1845 (.young) (Guiana); Schomb., Keisen in Brit. Guiana, 637, 1848 (Esse- 

 qnibo; Eupununi; Takutu) ; Cuv. & Val., XXIL, 297, 1848; Eigenm. & 

 Eigenm., Proc. U. S. Xat. Mus., XIV., 59, 1891. 



