416 MEMOIRS OF THE CARNEGIE MUSEUM 



merika's," iv, 1882, 11 (Huallaga). — Perugia, Ann. Mus. Genova, (2a), X, 



1891, 39 (Rio de la Plata; Chaco; Parana; Rio Paraguay). — Boulenger, Boll. 



Mus. Torino, X, 1895, 2 (Colonia Risso). — Perugia, Ann. Mus. Genova, (2), 



XVIII, 1897, 24 (Reyes).— Boulenger, Boll. Mus. Zool. cd Anat. Comp. 



Torino, XII, 1897, — (San Lorenzo); XV, 1900, — (Urucuru).— Regan, Proc. 



Zool. Soc. London, 1906, 382 (Trinidad). 

 Erythrinus macrodon Agassiz, Selecta Gen. et Spec. Pise. Bras., 1829, 43, pi. 18, 



(Almada, Prov. Bahia; Rio San Francisco). 

 Erythrinus microcephalus Agassiz, Selecta Gen. et Spec. Pise. Bras., 1829, 44 (Rio 



San Francisco). 

 Erythrinus hrasiliensis Spix, Selecta Gen. et Spec. Pise. Bras., 1829, 45, pi. 20 



(Pernaguacu) . — MtJLLER and Troschel, in Schomburgk, Reisen, III, 1848, 



633 (all streams) . — Castelnau, Anim. Am. Sud, Poiss. (Carandahy; Rio das 



Mortes, Minas Geraes). 

 Macrodon guavina Valenciennes, in Humboldt, Rec. Obs. Zool., II, 1833, 179, 



pi. 48, fig. 1. — CuviER and Valenciennes, Hist. Nat. Poiss., XIX, 1846, 527 



(Lake Tacarigua). 

 Macrodon auritus Cuvier and Valenciennes, Hist. Nat. Poiss., XIX, 1846, 519 



(Montevideo). — Steindachner, " Ichthyologische Notizen," ix, 1869, 12 



(Montevideo). 

 Macrodon teres Cuvier and Valenciennes, Hist. Nat. Poiss., XIX, 1846, 521 



(Maracaibo). 

 Macrodon patana Cuvier and Valenciennes, Hist. Nat. Poiss., XIX, 1846, 522 



(Cayenne). 

 Macrodon ferox Gill, Ann. Lye. Nat. Hist. N. Y., VI, 1858, 51 (Trinidad). 



Five specimens, 124-183 mm. Barima River. (C. M. Cat. No. 2179a-c; 

 I. U. Cat. No. 12343.) 



Two specimens, 80-108 mm. Issorora. (C. M. Cat. No. 2180a; I. U. Cat. 

 No. 12344.) 



One specimen, 103 mm. Koreabo. (C. M. Cat. No. 2181.) 



One specimen, 178 mm. Rupununi. (C. M. Cat. No. 2182.) 



One specimen, 175 mm. Below Packeoo Falls. (C. M. Cat. No. 2183a.) 



One specimen, 160 mm. Crab Falls. (C. M. Cat. No. 2184a.) 



Two specimens, 83-87 mm. Rockstone. (C. M. Cat. No. 2185; I. U. Cat. 

 No. 12345.) 



Thirteen specimens, 87-225 mm. Gluck Island. (C. M. Cat. No. 2186a-c; 

 I. U. Cat. No. 12346.) 



