SOUTH AMERICAN NEMATOGNATHI. 211 



152 d. Pseudoplatystoma fasciatum reticulatum. 



P.f. reticulatum E. & E. Proc. Cal. Acad. Sci. 2d Ser. ii, 30, 1889 



(Rio Negro). 

 Type: No. 23,813; .77 m. Eio Negro. 



153. Pseudoplatystoma tigrinum. 



Platystoma tigrinum Cuv. & Val. Hist. Nat. Poiss. xv, 10, pi. 422, 

 1840 (Brazil); Schomburgk, Fishes of Guiana, part i, 185, pi. 

 viii, 1841 (Rivers of Gi^iaua); Castelnau, Anim. Am. Sud, 39, 

 1855 (Amazons); Giinther, Cat. Fish. Brit. Mus. v, 107, 1864 

 (copied); Vaillant, Bull. Soc. Philom. series 7, iv, 151, 1880 

 (Calderon). 



Platystoma fasciatum tigrinum Eigenm. & Eigenm. Proc. Cal. Acad. 

 2d Ser. i, 138, 1888 (Obidos). 



Habitat: Amazon and northward; probably coextensive vi'iih. fasci- 

 atum. 



Eight specimens .25-1.00 m. Manaos; Obidos; Teffe; Jutahy. 



This species differs from fasciatum in the character 

 mentioned in the key. 



154. Pseudoplatystoma coruscans. 



Platystoma coruscans Agassiz, Gen. et Spec. Pise. Bras. 26, 1829 

 (Brazil); Cuv. & Val. Hist. Nat. Poiss. xv, 17, 1840 (Rio San 

 Francisco); Giinther, Cat. Fish. Brit. Mus. v, 108, 1864(copied); 

 Eigenm. & Eigenm. Proc. Cal. Acad. 2d Ser. i, 138, 1888 

 (Manaos; Rio das Velhas; Rio San Francisco below the falls). 



Sorubim caparary Spix, Gen. et Spec. Pise. Bras. 26, pi. xiii, 1829 

 (Rio San Francisco). 



Platystoma caparary Castelnau, Anim. Am. Sud, 40, 1855. 



Platystoma parclalis Valenciennes, Voy. d' Orbigny, ix, atlas ii, 

 plate iv, fig. 2, 1847; Cuv. & Val. Hist. Nat. Poiss. xv, 15, 

 1840 (Buenos Ayres), Giinther, Cat. Fish. Brit. Mus. v, 108, 

 1840 (copied). 



Platystoma punctatum Cuv. tt Val. Hist. Nat. Poiss. xv, 20, 1840 

 (name only). 



Platystoma orbignianum Valenciennes, Voy. d' Orbigny, Atlas ii, 

 plate iv, fig. 3, 1847; Cuv. & Val. Hist. Nat. Poiss. xv, 12, 

 (Buenos Ayres: Parana to Corrientes); Giinther, Cat. Fish. 

 Brit. Mus. v, 107, 1864 (Cipo, tributary of Rio das Velhas); 

 Liitken, Dan. Selsk. Skr. 1875, 154, fig. (Rio das Velhas). 



Platystoma forschhammeri Reinhardt MS. in Liitken 1. c. 



Habitat: Rio Plata, Rio San Francisco and their tribiitaries. 



The fishes named above are undoubtedly identical. 

 The pardalis and orbignianum of Valenciennes were 



