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. Rio Negro. 



153, Pseudoplatystoma tigrinum. 



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

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

 viii, 1841 (Rivers of Guiana); 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 with 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 par dolls 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. & 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 tributaries. 



The fishes named above are undoubtedly identical. 

 The pardalis and orbignianum of Valenciennes were 



