eigenmann: the FRESHWATER FISHES OF BRITISH GUIANA 173 



cisco; Rio das Velhas; Amazon between Para and Santarem; Rio Grande do Sul; 

 Porto Alegre).— Peters, MB. Akad. Wiss. Berlin, 1877, 470 (Calabozo).- 

 Boulenger, Proc. Zool. Soc. London, 1891, 233 (Rio Grande do Sul). — Peru- 

 gia, Ann. Mus. Genova, (2), X, 1891, 630 (Rio Durazno; Rio de La Plata; 

 Paraguay; Parana; Montevideo; Buenos Aires). — von Ihering, Siisswasser- 

 fische Rio Grande do Sul, 1893, 17.— Lahille, Rev. Mus. la Plata, VI, 1895, 

 271 (very abundant everywhere in La Plata) . — Boulenger, Boll. Mus. Zool. 

 ed Anat. Comp. Torino, XII, 1897 (Mission San Francisco). — Perugia, Ann. 

 Mus. Genova, (2), XVIII, 1897, 149,— (Puerto 14 de Mayo).— Pellegrin, 

 Bull. Mus. d'Hist. Nat., V, 1899, 157 (Apure) .—Vaillant, Nouv. Arch. Mus. 

 d'Hist. Nat. (4), 1900, 124 (Carsevenne, French Guiana). — Steindachner and 

 von Bayern, Denkschr. Akad. Wiss. Wien, LXXII, 1902, 135. — Eigenmann and 

 Bean, Proc. U. S. Nat. Mus., XXXI, 1907, 668 (Amazon) ; Eigenmann, Ann. 

 Carnegie Mus., IV, 1907, 115 (Porto Murtinho; Bahia Negra; Corumba). 



Pimelodus rigidus Agassiz, Selecta Gen. et Spec. Bras., 1829, 19, pi. 7, fig. 2. 



Pimelodus blochii Cuvier and Valenciennes, Hist, Nat. Poiss., XV, 1840, 188 

 (Cayenne; (Surinam). 



Paramutana blochii Gunther, Catalogue, V, 1864, 111 (copied). — Vaillant, Bull. 

 Soc. Philom., (7), IV, 1880, 152 (Calderon). 



? Pimelodus arekaima Schomburgk, Fishes Brit, Guiana, I, 1841, 178, plate, not 

 descr. (Essequibo). 



Mystus ascita Gronow, Cat. Fish, ed. Gray, 1854, 156 (based on Mus. Ichth., I, 

 1754, 35; Zoophyl, I, 1763, 125, No. 385). 



Pimelodus schomburgkii Bleeker, Ichth. Arch. Ind. Prodr., I, 1858, 208 (for 

 B. maculatus Schomburgk). 



Pseudorhamdia ascita Bleeker, Versl. en Med. Acad. Wet. Amsterdam, XIV, 

 1862, 384. (Surinam). 



Pimelodus macronema Bleeker, "Silures de Suriname," 1864, 79, pi. 14 (Surinam). 



Pseudorhamdia piscatrix Cope, Proc. Am. Philos. Soc, XI, 1870, 569 (Pebas); 

 Proc. Acad. Nat, Sci. Phila., 1872, 262 (Ambyiacu River); Proc. Am. Philos. 

 Soc, XVII, 1878, 674 (Peruvian Amazon). 



Pseudariodes pantherinus Lutken, Vid. Med. Naturhist, For. Kjobenhavn, 1874, 

 192, 199 (Venezuela). 



Pseudariodes albicans Lutken, Vid. Med. Naturhist. For. Kjobenhavn, 1874, 194, 

 198, not A irus albicans Valenciennes (La Plata and its tributaries). — Stein- 

 dachner, "Fisch-Fauna Magdalene n-Stromes," 1878, 61, note. 



Piramutana macrospila Gunther, Ann. and Mag. Nat, Hist. (5), VI, 1880, 10, 

 pi. 2 (Rio Plata). 



