Collected by Charles Frederick Hartt. 299 



One specimen from the Lower Amazon. D. I., 14; A. 32; Y. 

 7, scales about 95; head, 3^; depth, 15; abdominal serrations. 

 35. Palatines with teeth, some indistinct dark spots above the 

 lateral line. 



161. Myletes liioiutooidalis Cuvier. 



Mem. Mus., IV., 449, pi. 22, fig. 3; Cuv. & Val., XXII., 210, 1848: 

 Casteln., Aniin. Amer. Slid. Poiss., 67, 1855 (Amazon); Giinther, Cat. Fish. 

 Brit. Mus., v., 373, 1864 (Essequibo); Eiuenm. & Eigemu., Proc. U. S. Nat. 

 Mus., XIV., 60, 1891. 



TetrcKjonopterus hdus Scliomb., Fish. Giiiana, I., 241, 1841 (Rivers of 

 Guiana). 



3Iyletes Mus Miill. & Trosch., Hor. Ichth., T., 37, 1845 (Essequibol. 



One specimen from Brazil. 



162. IWyletes pariiia Giinther. 



Cat. Fish. Brit. Mus., V., 374, 1864 (River Capin); Eigenm. &. Eigenm., 

 Proc. U. S. Nat. Mus., XIV., 60, 1891. 



Habitat: — Tocantins, one specimen; Brazil, six specimens. 



163. Myletes orbigiiyaiius Cuv. c*v: Val. 



^uv. & Val., XXII., 220 (Parana) ; Giinther, Cat. Fish. Brit. Mus., V., 

 375, 1864 ; Eigenm. & Eigenm., Proc. IT. S. Nat. Mus., XIV., 60, 1891. 



One specimen from Itaituba. This specimen may be referred 

 with some doubt to orbignyanus from Giinther 's short description 

 of it. I have not access to Cuv. & Val., XXII. 



164. jflyletes hypi^aiiclieii Miiller and Troschell. 



Hor. Ichth., I., 38, tab. 10, fig. 1, 1845 (Essequibo ; Guiana) ; Cuv. & Val., 

 XXII. , 219 ; Kner, Denkschr. Acad. Wiss. Wien, XVIII. , 26, 1860 (Caiyara : 

 Marabitanos) ; Giinther, Cat. Fish. Brit. Mus., V., 376 (Essequibo River) ; 

 Eigenm. & Eigenm., Proc. U. S. Nat. Mus., XIV., 61, 1891. 



Habitat: — Tocantins (one specimen) ; Itaituba (two specimens). 



165. Myletes oligocantlius (Miiller and Troschell). 



Myleus oligocanthm Mull. & Trosch., Hor. Ichth., I., 40, tab. 8, fig. 4 

 (young), 1845 (Surinam). 



yiijletr>< olirjomnthm lji\\\t\ici\ Cat. Fish. Brit. Mus., V., 378, 1864 (Demarara) : 

 Eigenm. & Eigenm., Proc. U. S. Nat. Mus., XIV., 61, 1891. 



Habitat: — Brazil (one specimen). 



166. Myletes lippeiicottiaiius Cope. 



Proc. Amer. Philos. Soc, 561, 1870 (Para, Brazil), Eigenm., Proc. U. S. 

 Nat. Mus., XIV., 61, 1891. 



